20102120220112 has 40 divisors (see below), whose sum is σ = 44518545896576. Its totient is φ = 8613896006016.

The previous prime is 20102120220109. The next prime is 20102120220113. The reversal of 20102120220112 is 21102202120102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102120220113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12778068 + ... + 14264755.

Almost surely, 2^{20102120220112} is an apocalyptic number.

It is an amenable number.

20102120220112 is an abundant number, since it is smaller than the sum of its proper divisors (24416425676464).

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

20102120220112 is a wasteful number, since it uses less digits than its factorization.

20102120220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27049475 (or 27049469 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20102120220112 its reverse (21102202120102), we get a palindrome (41204322340214).

The spelling of 20102120220112 in words is "twenty trillion, one hundred two billion, one hundred twenty million, two hundred twenty thousand, one hundred twelve".