222252121 has 16 divisors (see below), whose sum is σ = 273901824. Its totient is φ = 175616064.

The previous prime is 222252119. The next prime is 222252127. The reversal of 222252121 is 121252222.

It is not a de Polignac number, because 222252121 - 2¹ = 222252119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222252127) 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, 110295 + ... + 112291.

It is an arithmetic number, because the mean of its divisors is an integer number (17118864).

Almost surely, 2^222252121 is an apocalyptic number.

It is an amenable number.

222252121 is a deficient number, since it is larger than the sum of its proper divisors (51649703).

222252121 is a wasteful number, since it uses less digits than its factorization.

222252121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240.

The product of its digits is 320, while the sum is 19.

The square root of 222252121 is about 14908.1226517627. The cubic root of 222252121 is about 605.7340279016.

The spelling of 222252121 in words is "two hundred twenty-two million, two hundred fifty-two thousand, one hundred twenty-one".