20100111111112 has 16 divisors (see below), whose sum is σ = 37687825552860. Its totient is φ = 10050024297024.

The previous prime is 20100111111061. The next prime is 20100111111169. The reversal of 20100111111112 is 21111111100102.

It can be written as a sum of positive squares in 2 ways, for example, as 20038282299396 + 61828811716 = 4476414^2 + 248654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20100111111092 and 20100111111101.

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, 1051683 + ... + 6426994.

Almost surely, 2^{20100111111112} is an apocalyptic number.

It is an amenable number.

20100111111112 is a deficient number, since it is larger than the sum of its proper divisors (17587714441748).

20100111111112 is a wasteful number, since it uses less digits than its factorization.

20100111111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814640 (or 7814636 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 20100111111112 its reverse (21111111100102), we get a palindrome (41211222211214).

The spelling of 20100111111112 in words is "twenty trillion, one hundred billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".