997211322 has 24 divisors (see below), whose sum is σ = 2254565664. Its totient is φ = 317951304.

The previous prime is 997211297. The next prime is 997211329. The reversal of 997211322 is 223112799.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (997211329) 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 11 ways as a sum of consecutive naturals, for example, 1203948 + ... + 1204775.

It is an arithmetic number, because the mean of its divisors is an integer number (93940236).

Almost surely, 2^997211322 is an apocalyptic number.

997211322 is an abundant number, since it is smaller than the sum of its proper divisors (1257354342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997211322 is a wasteful number, since it uses less digits than its factorization.

997211322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408754 (or 2408751 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 997211322 is about 31578.6529478380. The cubic root of 997211322 is about 999.0695752449.

The spelling of 997211322 in words is "nine hundred ninety-seven million, two hundred eleven thousand, three hundred twenty-two".