20110231355204 has 12 divisors (see below), whose sum is σ = 35449787389884. Its totient is φ = 9981720672384.

The previous prime is 20110231355177. The next prime is 20110231355213. The reversal of 20110231355204 is 40255313201102.

It can be written as a sum of positive squares in 2 ways, for example, as 3681801115204 + 16428430240000 = 1918802^2 + 4053200^2 .

It is a super-2 number, since 2×20110231355204² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18348750689 + ... + 18348751784.

It is an arithmetic number, because the mean of its divisors is an integer number (2954148949157).

Almost surely, 2^{20110231355204} is an apocalyptic number.

It is an amenable number.

20110231355204 is a deficient number, since it is larger than the sum of its proper divisors (15339556034680).

20110231355204 is a wasteful number, since it uses less digits than its factorization.

20110231355204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36697502614 (or 36697502612 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 20110231355204 its reverse (40255313201102), we get a palindrome (60365544556306).

The spelling of 20110231355204 in words is "twenty trillion, one hundred ten billion, two hundred thirty-one million, three hundred fifty-five thousand, two hundred four".