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20112210000020 = 2254332322426097
BaseRepresentation
bin1001001001010101111010…
…01000011111100010010100
32122012201010111101010010102
410210222331020133202110
510114004301230000040
6110435231031513232
74144026212211035
oct444527510374224
978181114333112
1020112210000020
1164545a4247946
122309a6a528818
13b2b75b603b58
144d7616b62a8c
1524d270ec3515
hex124abd21f894

20112210000020 has 24 divisors (see below), whose sum is σ = 42333182914344. Its totient is φ = 8026304587776.

The previous prime is 20112209999977. The next prime is 20112210000061. The reversal of 20112210000020 is 2000001221102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 309300597904 + 19802909402116 = 556148^2 + 4450046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20112209999956 and 20112210000010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161204389 + ... + 1161221708.

It is an arithmetic number, because the mean of its divisors is an integer number (1763882621431).

Almost surely, 220112210000020 is an apocalyptic number.

20112210000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112210000020 is an abundant number, since it is smaller than the sum of its proper divisors (22220972914324).

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

20112210000020 is a wasteful number, since it uses less digits than its factorization.

20112210000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322426539 (or 2322426537 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20112210000020 its reverse (2000001221102), we get a palindrome (22112211221122).

The spelling of 20112210000020 in words is "twenty trillion, one hundred twelve billion, two hundred ten million, twenty", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 433 866 1732 2165 4330 8660 2322426097 4644852194 9289704388 11612130485 23224260970 46448521940 1005610500001 2011221000002 4022442000004 5028052500005 10056105000010 20112210000020