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200012220021 = 31381187925693
BaseRepresentation
bin1011101001000110101…
…0000100011001110101
3201010021012021112012210
42322101222010121311
511234111112020041
6231515004004033
720310326550615
oct2722152043165
9633235245183
10200012220021
1177908758299
123291b830619
1315b26a0a363
149975982a45
15530958a016
hex2e91a84675

200012220021 has 16 divisors (see below), whose sum is σ = 267028492160. Its totient is φ = 133168829760.

The previous prime is 200012219999. The next prime is 200012220041. The reversal of 200012220021 is 120022210002.

Adding to 200012220021 its reverse (120022210002), we get a palindrome (320034430023).

It is not a de Polignac number, because 200012220021 - 230 = 198938478197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200012219979 and 200012220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200012220041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7771851 + ... + 7797543.

It is an arithmetic number, because the mean of its divisors is an integer number (16689280760).

Almost surely, 2200012220021 is an apocalyptic number.

It is an amenable number.

200012220021 is a deficient number, since it is larger than the sum of its proper divisors (67016272139).

200012220021 is a wasteful number, since it uses less digits than its factorization.

200012220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28956.

The product of its (nonzero) digits is 32, while the sum is 12.

The spelling of 200012220021 in words is "two hundred billion, twelve million, two hundred twenty thousand, twenty-one".

Divisors: 1 3 1381 1879 4143 5637 25693 77079 2594899 7784697 35482033 48277147 106446099 144831441 66670740007 200012220021