222912907 has 12 divisors (see below), whose sum is σ = 259557480. Its totient is φ = 190883616.

The previous prime is 222912889. The next prime is 222912913. The reversal of 222912907 is 709219222.

It is a de Polignac number, because none of the positive numbers 2^k-222912907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222912967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80319 + ... + 83047.

It is an arithmetic number, because the mean of its divisors is an integer number (21629790).

Almost surely, 2^222912907 is an apocalyptic number.

222912907 is a deficient number, since it is larger than the sum of its proper divisors (36644573).

222912907 is a wasteful number, since it uses less digits than its factorization.

222912907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410 (or 4403 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 222912907 is about 14930.2681489650. The cubic root of 222912907 is about 606.3337440272. Note that the first 3 decimals are identical.

The spelling of 222912907 in words is "two hundred twenty-two million, nine hundred twelve thousand, nine hundred seven".