20221012 has 24 divisors (see below), whose sum is σ = 41108480. Its totient is φ = 8523360.

The previous prime is 20221009. The next prime is 20221027. The reversal of 20221012 is 21012202.

It is a self number, because there is not a number n which added to its sum of digits gives 20221012.

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, 4212 + ... + 7627.

Almost surely, 2^20221012 is an apocalyptic number.

It is an amenable number.

20221012 is an abundant number, since it is smaller than the sum of its proper divisors (20887468).

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

20221012 is a wasteful number, since it uses less digits than its factorization.

20221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11911 (or 11909 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20221012 is about 4496.7779576048. Note that the first 3 decimals coincide. The cubic root of 20221012 is about 272.4379658471.

Adding to 20221012 its reverse (21012202), we get a palindrome (41233214).

It can be divided in two parts, 202 and 21012, that multiplied together give a palindrome (4244424).

The spelling of 20221012 in words is "twenty million, two hundred twenty-one thousand, twelve".