822992121 has 24 divisors (see below), whose sum is σ = 1381623360. Its totient is φ = 462308256.

The previous prime is 822992089. The next prime is 822992153. The reversal of 822992121 is 121299228.

It is an interprime number because it is at equal distance from previous prime (822992089) and next prime (822992153).

It is not a de Polignac number, because 822992121 - 2⁵ = 822992089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (822992921) 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 23 ways as a sum of consecutive naturals, for example, 106990 + ... + 114423.

It is an arithmetic number, because the mean of its divisors is an integer number (57567640).

Almost surely, 2^822992121 is an apocalyptic number.

It is an amenable number.

822992121 is a deficient number, since it is larger than the sum of its proper divisors (558631239).

822992121 is a wasteful number, since it uses less digits than its factorization.

822992121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221485 (or 221482 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 822992121 is about 28687.8392528960. The cubic root of 822992121 is about 937.1272339882.

The spelling of 822992121 in words is "eight hundred twenty-two million, nine hundred ninety-two thousand, one hundred twenty-one".