20221565012 has 36 divisors (see below), whose sum is σ = 38910556608. Its totient is φ = 9188480400.

The previous prime is 20221565009. The next prime is 20221565051. The reversal of 20221565012 is 21056512202.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1984643 + ... + 1994805.

Almost surely, 2^20221565012 is an apocalyptic number.

20221565012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20221565012 is a deficient number, since it is larger than the sum of its proper divisors (18688991596).

20221565012 is a wasteful number, since it uses less digits than its factorization.

20221565012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14300 (or 14287 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 20221565012 in words is "twenty billion, two hundred twenty-one million, five hundred sixty-five thousand, twelve".