22002313212 has 72 divisors (see below), whose sum is σ = 60978153600. Its totient is φ = 6633839520.

The previous prime is 22002313183. The next prime is 22002313237. The reversal of 22002313212 is 21231320022.

22002313212 is a `hidden beast` number, since 220 + 0 + 231 + 3 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60798 + ... + 218405.

It is an arithmetic number, because the mean of its divisors is an integer number (846918800).

Almost surely, 2^22002313212 is an apocalyptic number.

22002313212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22002313212 is an abundant number, since it is smaller than the sum of its proper divisors (38975840388).

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

22002313212 is a wasteful number, since it uses less digits than its factorization.

22002313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279423 (or 279418 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22002313212 its reverse (21231320022), we get a palindrome (43233633234).

The spelling of 22002313212 in words is "twenty-two billion, two million, three hundred thirteen thousand, two hundred twelve".