22002331212 has 48 divisors (see below), whose sum is σ = 58009929600. Its totient is φ = 7209801360.

The previous prime is 22002331207. The next prime is 22002331249. The reversal of 22002331212 is 21213320022.

22002331212 is a `hidden beast` number, since 220 + 0 + 233 + 1 + 212 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720114 + ... + 1732857.

It is an arithmetic number, because the mean of its divisors is an integer number (1208540200).

Almost surely, 2^22002331212 is an apocalyptic number.

It is an amenable number.

22002331212 is an abundant number, since it is smaller than the sum of its proper divisors (36007598388).

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

22002331212 is a wasteful number, since it uses less digits than its factorization.

22002331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453043 (or 3453035 counting only the distinct ones).

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

Adding to 22002331212 its reverse (21213320022), we get a palindrome (43215651234).

The spelling of 22002331212 in words is "twenty-two billion, two million, three hundred thirty-one thousand, two hundred twelve".