222156502 has 8 divisors (see below), whose sum is σ = 333314712. Its totient is φ = 111051600.

The previous prime is 222156479. The next prime is 222156551. The reversal of 222156502 is 205651222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×222156502² = 98707022761752008, which contains 22 as substring.

It is a congruent number.

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, 399 + ... + 21082.

It is an arithmetic number, because the mean of its divisors is an integer number (41664339).

Almost surely, 2^222156502 is an apocalyptic number.

222156502 is a deficient number, since it is larger than the sum of its proper divisors (111158210).

222156502 is a wasteful number, since it uses less digits than its factorization.

222156502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26654.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 222156502 is about 14904.9153637315. The cubic root of 222156502 is about 605.6471476055.

The spelling of 222156502 in words is "two hundred twenty-two million, one hundred fifty-six thousand, five hundred two".