20102111012112 has 80 divisors (see below), whose sum is σ = 52814964744960. Its totient is φ = 6586591824000.

The previous prime is 20102111011991. The next prime is 20102111012131. The reversal of 20102111012112 is 21121011120102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20102111012091 and 20102111012100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34976187 + ... + 35546277.

It is an arithmetic number, because the mean of its divisors is an integer number (660187059312).

Almost surely, 2^{20102111012112} is an apocalyptic number.

It is an amenable number.

20102111012112 is an abundant number, since it is smaller than the sum of its proper divisors (32712853732848).

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

20102111012112 is a wasteful number, since it uses less digits than its factorization.

20102111012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582612 (or 582606 counting only the distinct ones).

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

Adding to 20102111012112 its reverse (21121011120102), we get a palindrome (41223122132214).

The spelling of 20102111012112 in words is "twenty trillion, one hundred two billion, one hundred eleven million, twelve thousand, one hundred twelve".