20112111100112 has 10 divisors (see below), whose sum is σ = 38967215256498. Its totient is φ = 10056055550048.

The previous prime is 20112111100063. The next prime is 20112111100117. The reversal of 20112111100112 is 21100111121102.

It can be written as a sum of positive squares in only one way, i.e., 20050549550656 + 61561549456 = 4477784^2 + 248116^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112111100117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628503471863 + ... + 628503471894.

Almost surely, 2^{20112111100112} is an apocalyptic number.

It is an amenable number.

20112111100112 is a deficient number, since it is larger than the sum of its proper divisors (18855104156386).

20112111100112 is a wasteful number, since it uses less digits than its factorization.

20112111100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257006943765 (or 1257006943759 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20112111100112 its reverse (21100111121102), we get a palindrome (41212222221214).

The spelling of 20112111100112 in words is "twenty trillion, one hundred twelve billion, one hundred eleven million, one hundred thousand, one hundred twelve".