921909122 has 16 divisors (see below), whose sum is σ = 1398945600. Its totient is φ = 455611152.

The previous prime is 921909119. The next prime is 921909169. The reversal of 921909122 is 221909129.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 112004 + ... + 119952.

It is an arithmetic number, because the mean of its divisors is an integer number (87434100).

Almost surely, 2^921909122 is an apocalyptic number.

921909122 is a deficient number, since it is larger than the sum of its proper divisors (477036478).

921909122 is a wasteful number, since it uses less digits than its factorization.

921909122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8617.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 921909122 is about 30362.9564107318. The cubic root of 921909122 is about 973.2611116686.

The spelling of 921909122 in words is "nine hundred twenty-one million, nine hundred nine thousand, one hundred twenty-two".