222102156 has 12 divisors (see below), whose sum is σ = 518238392. Its totient is φ = 74034048.

The previous prime is 222102149. The next prime is 222102163. The reversal of 222102156 is 651201222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222102149) and next prime (222102163).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9254245 + ... + 9254268.

Almost surely, 2^222102156 is an apocalyptic number.

It is an amenable number.

222102156 is an abundant number, since it is smaller than the sum of its proper divisors (296136236).

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

222102156 is a wasteful number, since it uses less digits than its factorization.

222102156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18508520 (or 18508518 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 222102156 is about 14903.0921623668. The cubic root of 222102156 is about 605.5977572225.

Adding to 222102156 its reverse (651201222), we get a palindrome (873303378).

It can be divided in two parts, 222 and 102156, that added together give a triangular number (102378 = T₄₅₂).

The spelling of 222102156 in words is "two hundred twenty-two million, one hundred two thousand, one hundred fifty-six".