912352221 has 48 divisors (see below), whose sum is σ = 1501516800. Its totient is φ = 547050240.

The previous prime is 912352211. The next prime is 912352249. The reversal of 912352221 is 122253219.

It is a happy number.

912352221 is a `hidden beast` number, since 91 + 2 + 352 + 221 = 666.

It is not a de Polignac number, because 912352221 - 2⁶ = 912352157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912352211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 315460 + ... + 318338.

It is an arithmetic number, because the mean of its divisors is an integer number (31281600).

Almost surely, 2^912352221 is an apocalyptic number.

It is an amenable number.

912352221 is a deficient number, since it is larger than the sum of its proper divisors (589164579).

912352221 is a wasteful number, since it uses less digits than its factorization.

912352221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007 (or 2990 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 912352221 is about 30205.1687795318. The cubic root of 912352221 is about 969.8863440717.

The spelling of 912352221 in words is "nine hundred twelve million, three hundred fifty-two thousand, two hundred twenty-one".