20211020112 has 80 divisors (see below), whose sum is σ = 57189464640. Its totient is φ = 6122059776.

The previous prime is 20211020099. The next prime is 20211020113. The reversal of 20211020112 is 21102011202.

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 (20211020113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403378 + ... + 450705.

It is an arithmetic number, because the mean of its divisors is an integer number (714868308).

Almost surely, 2^20211020112 is an apocalyptic number.

It is an amenable number.

20211020112 is an abundant number, since it is smaller than the sum of its proper divisors (36978444528).

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

20211020112 is a wasteful number, since it uses less digits than its factorization.

20211020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854140 (or 854134 counting only the distinct ones).

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

Adding to 20211020112 its reverse (21102011202), we get a palindrome (41313031314).

It can be divided in two parts, 202110 and 20112, that added together give a palindrome (222222).

The spelling of 20211020112 in words is "twenty billion, two hundred eleven million, twenty thousand, one hundred twelve".