20021012012112 has 20 divisors (see below), whose sum is σ = 51720947698080. Its totient is φ = 6673670670688.

The previous prime is 20021012012101. The next prime is 20021012012117. The reversal of 20021012012112 is 21121021012002.

It is a junction number, because it is equal to n+sod(n) for n = 20021012012091 and 20021012012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021012012117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208552208412 + ... + 208552208507.

It is an arithmetic number, because the mean of its divisors is an integer number (2586047384904).

Almost surely, 2^{20021012012112} is an apocalyptic number.

It is an amenable number.

20021012012112 is an abundant number, since it is smaller than the sum of its proper divisors (31699935685968).

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

20021012012112 is a wasteful number, since it uses less digits than its factorization.

20021012012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417104416930 (or 417104416924 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021012012112 its reverse (21121021012002), we get a palindrome (41142033024114).

The spelling of 20021012012112 in words is "twenty trillion, twenty-one billion, twelve million, twelve thousand, one hundred twelve".