20100111122112 has 112 divisors (see below), whose sum is σ = 60781141604352. Its totient is φ = 5742677790720.

The previous prime is 20100111122111. The next prime is 20100111122123. The reversal of 20100111122112 is 21122111100102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 20100111122091 and 20100111122100.

It is not an unprimeable number, because it can be changed into a prime (20100111122111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38316312 + ... + 38837352.

Almost surely, 2^{20100111122112} is an apocalyptic number.

It is an amenable number.

20100111122112 is an abundant number, since it is smaller than the sum of its proper divisors (40681030482240).

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

20100111122112 is a wasteful number, since it uses less digits than its factorization.

20100111122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549766 (or 549756 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20100111122112 its reverse (21122111100102), we get a palindrome (41222222222214).

The spelling of 20100111122112 in words is "twenty trillion, one hundred billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twelve".