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20203021213012 = 221119109221709113
BaseRepresentation
bin1001001011111111000011…
…11001110001110101010100
32122112101112021200201021101
410211333201321301311110
510122001241412304022
6110545050111155444
74153422461612041
oct445774171616524
978471467621241
1020203021213012
11648a0648682a0
122323592b15b84
13b371a1503a01
144dbb8d6a81c8
152507d868e627
hex125fe1e71d54

20203021213012 has 48 divisors (see below), whose sum is σ = 40971844267200. Its totient is φ = 8620050274560.

The previous prime is 20203021212931. The next prime is 20203021213033. The reversal of 20203021213012 is 21031212030202.

It is a super-2 number, since 2×202030212130122 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110763433 + ... + 110945680.

It is an arithmetic number, because the mean of its divisors is an integer number (853580088900).

Almost surely, 220203021213012 is an apocalyptic number.

20203021213012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20203021213012 is an abundant number, since it is smaller than the sum of its proper divisors (20768823054188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20203021213012 is a wasteful number, since it uses less digits than its factorization.

20203021213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221709256 (or 221709254 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20203021213012 its reverse (21031212030202), we get a palindrome (41234233243214).

The spelling of 20203021213012 in words is "twenty trillion, two hundred three billion, twenty-one million, two hundred thirteen thousand, twelve".

Divisors: 1 2 4 11 19 22 38 44 76 109 209 218 418 436 836 1199 2071 2398 4142 4796 8284 22781 45562 91124 221709113 443418226 886836452 2438800243 4212473147 4877600486 8424946294 9755200972 16849892588 24166293317 46337204617 48332586634 92674409234 96665173268 185348818468 265829226487 459159573023 531658452974 918319146046 1063316905948 1836638292092 5050755303253 10101510606506 20203021213012