222212121002220 has 48 divisors (see below), whose sum is σ = 639009991212768. Its totient is φ = 57655036800000.

The previous prime is 222212121002213. The next prime is 222212121002233. The reversal of 222212121002220 is 22200121212222.

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, 50047772781 + ... + 50047777220.

It is an arithmetic number, because the mean of its divisors is an integer number (13312708150266).

Almost surely, 2^{222212121002220} is an apocalyptic number.

222212121002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222212121002220 is an abundant number, since it is smaller than the sum of its proper divisors (416797870210548).

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

222212121002220 is a wasteful number, since it uses less digits than its factorization.

222212121002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100095550050 (or 100095550048 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222212121002220 its reverse (22200121212222), we get a palindrome (244412242214442).

The spelling of 222212121002220 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred twenty-one million, two thousand, two hundred twenty".