222221013231121 has 16 divisors (see below), whose sum is σ = 238987945494144. Its totient is φ = 205869440012544.

The previous prime is 222221013231083. The next prime is 222221013231131. The reversal of 222221013231121 is 121132310122222.

It is a cyclic number.

It is not a de Polignac number, because 222221013231121 - 2²⁹ = 222220476360209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222221013231131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73382290 + ... + 76350523.

It is an arithmetic number, because the mean of its divisors is an integer number (14936746593384).

Almost surely, 2^{222221013231121} is an apocalyptic number.

It is an amenable number.

222221013231121 is a deficient number, since it is larger than the sum of its proper divisors (16766932263023).

222221013231121 is a wasteful number, since it uses less digits than its factorization.

222221013231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149734200.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 222221013231121 its reverse (121132310122222), we get a palindrome (343353323353343).

The spelling of 222221013231121 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, thirteen million, two hundred thirty-one thousand, one hundred twenty-one".