21222212000 has 96 divisors (see below), whose sum is σ = 56883363264. Its totient is φ = 7717152000.

The previous prime is 21222211999. The next prime is 21222212029. The reversal of 21222212000 is 21222212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197162 + ... + 285161.

It is an arithmetic number, because the mean of its divisors is an integer number (592535034).

Almost surely, 2^21222212000 is an apocalyptic number.

21222212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222212000 is an abundant number, since it is smaller than the sum of its proper divisors (35661151264).

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

21222212000 is a wasteful number, since it uses less digits than its factorization.

21222212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482359 (or 482341 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21222212000 its reverse (21222212), we get a palindrome (21243434212).

21222212000 divided by its reverse (21222212) gives a cube (1000 = 10³).

It can be divided in two parts, 2122 and 2212000, that added together give a palindrome (2214122).

The spelling of 21222212000 in words is "twenty-one billion, two hundred twenty-two million, two hundred twelve thousand".