20111112112110 has 64 divisors (see below), whose sum is σ = 51558149512512. Its totient is φ = 5002826694656.

The previous prime is 20111112112043. The next prime is 20111112112151. The reversal of 20111112112110 is 1121121111102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20111112112110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174427119 + ... + 174542378.

It is an arithmetic number, because the mean of its divisors is an integer number (805596086133).

Almost surely, 2^{20111112112110} is an apocalyptic number.

20111112112110 is an abundant number, since it is smaller than the sum of its proper divisors (31447037400402).

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

20111112112110 is a wasteful number, since it uses less digits than its factorization.

20111112112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348969637.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 20111112112110 its reverse (1121121111102), we get a palindrome (21232233223212).

The spelling of 20111112112110 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred twelve thousand, one hundred ten".