222121131210 has 96 divisors (see below), whose sum is σ = 630101115072. Its totient is φ = 53840298240.

The previous prime is 222121131209. The next prime is 222121131269. The reversal of 222121131210 is 12131121222.

222121131210 is a `hidden beast` number, since 222 + 121 + 1 + 312 + 10 = 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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13036717 + ... + 13053743.

It is an arithmetic number, because the mean of its divisors is an integer number (6563553282).

Almost surely, 2^222121131210 is an apocalyptic number.

222121131210 is an abundant number, since it is smaller than the sum of its proper divisors (407979983862).

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

222121131210 is a wasteful number, since it uses less digits than its factorization.

222121131210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30228 (or 30225 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 222121131210 its reverse (12131121222), we get a palindrome (234252252432).

The spelling of 222121131210 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred thirty-one thousand, two hundred ten".