20102021112 has 32 divisors (see below), whose sum is σ = 50752633680. Its totient is φ = 6634329600.

The previous prime is 20102021111. The next prime is 20102021113. The reversal of 20102021112 is 21112020102.

It is an interprime number because it is at equal distance from previous prime (20102021111) and next prime (20102021113).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102021111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4144033 + ... + 4148880.

Almost surely, 2^20102021112 is an apocalyptic number.

It is an amenable number.

20102021112 is an abundant number, since it is smaller than the sum of its proper divisors (30650612568).

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

20102021112 is a wasteful number, since it uses less digits than its factorization.

20102021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8293023 (or 8293019 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20102021112 its reverse (21112020102), we get a palindrome (41214041214).

The spelling of 20102021112 in words is "twenty billion, one hundred two million, twenty-one thousand, one hundred twelve".