20210021112 has 32 divisors (see below), whose sum is σ = 50553060480. Its totient is φ = 6732939360.

The previous prime is 20210021059. The next prime is 20210021131. The reversal of 20210021112 is 21112001202.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189028 + ... + 275955.

It is an arithmetic number, because the mean of its divisors is an integer number (1579783140).

Almost surely, 2^20210021112 is an apocalyptic number.

It is an amenable number.

20210021112 is an abundant number, since it is smaller than the sum of its proper divisors (30343039368).

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

20210021112 is a wasteful number, since it uses less digits than its factorization.

20210021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466803 (or 466799 counting only the distinct ones).

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

Adding to 20210021112 its reverse (21112001202), we get a palindrome (41322022314).

The spelling of 20210021112 in words is "twenty billion, two hundred ten million, twenty-one thousand, one hundred twelve".