222512072 has 8 divisors (see below), whose sum is σ = 417210150. Its totient is φ = 111256032.

The previous prime is 222512071. The next prime is 222512077. The reversal of 222512072 is 270215222.

It can be written as a sum of positive squares in only one way, i.e., 136282276 + 86229796 = 11674^2 + 9286^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (222512071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13906997 + ... + 13907012.

Almost surely, 2^222512072 is an apocalyptic number.

It is an amenable number.

222512072 is a deficient number, since it is larger than the sum of its proper divisors (194698078).

222512072 is a wasteful number, since it uses less digits than its factorization.

222512072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27814015 (or 27814011 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 222512072 is about 14916.8385390471. The cubic root of 222512072 is about 605.9700958641.

Adding to 222512072 its reverse (270215222), we get a palindrome (492727294).

The spelling of 222512072 in words is "two hundred twenty-two million, five hundred twelve thousand, seventy-two".