222156722 has 4 divisors (see below), whose sum is σ = 333235086. Its totient is φ = 111078360.

The previous prime is 222156719. The next prime is 222156751. The reversal of 222156722 is 227651222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 119924401 + 102232321 = 10951^2 + 10111^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55539179 + ... + 55539182.

Almost surely, 2^222156722 is an apocalyptic number.

222156722 is a deficient number, since it is larger than the sum of its proper divisors (111078364).

222156722 is a wasteful number, since it uses less digits than its factorization.

222156722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111078363.

The product of its digits is 6720, while the sum is 29.

The square root of 222156722 is about 14904.9227438454. The cubic root of 222156722 is about 605.6473475281.

The spelling of 222156722 in words is "two hundred twenty-two million, one hundred fifty-six thousand, seven hundred twenty-two".