1072822921 has 12 divisors (see below), whose sum is σ = 1126780932. Its totient is φ = 1021140000.

The previous prime is 1072822913. The next prime is 1072822931. The reversal of 1072822921 is 1292282701.

It can be written as a sum of positive squares in 2 ways, for example, as 23386896 + 1049436025 = 4836^2 + 32395^2 .

It is not a de Polignac number, because 1072822921 - 2³ = 1072822913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1072822931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49471 + ... + 67771.

It is an arithmetic number, because the mean of its divisors is an integer number (93898411).

Almost surely, 2^1072822921 is an apocalyptic number.

It is an amenable number.

1072822921 is a deficient number, since it is larger than the sum of its proper divisors (53958011).

1072822921 is an equidigital number, since it uses as much as digits as its factorization.

1072822921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18424 (or 18393 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1072822921 is about 32753.9756518197. The cubic root of 1072822921 is about 1023.7078052344.

The spelling of 1072822921 in words is "one billion, seventy-two million, eight hundred twenty-two thousand, nine hundred twenty-one".