15222164205212 has 24 divisors (see below), whose sum is σ = 28205945523504. Its totient is φ = 7163328045312.

The previous prime is 15222164205211. The next prime is 15222164205239. The reversal of 15222164205212 is 21250246122251.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15222164205211) 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, 12520418 + ... + 13682294.

It is an arithmetic number, because the mean of its divisors is an integer number (1175247730146).

Almost surely, 2^{15222164205212} is an apocalyptic number.

It is an amenable number.

15222164205212 is a deficient number, since it is larger than the sum of its proper divisors (12983781318292).

15222164205212 is a wasteful number, since it uses less digits than its factorization.

15222164205212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354565 (or 1354563 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 15222164205212 in words is "fifteen trillion, two hundred twenty-two billion, one hundred sixty-four million, two hundred five thousand, two hundred twelve".