2122329581 has 2 divisors, whose sum is σ = 2122329582. Its totient is φ = 2122329580.

The previous prime is 2122329557. The next prime is 2122329607. The reversal of 2122329581 is 1859232212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2055171556 + 67158025 = 45334^2 + 8195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122329581 is a prime.

It is a super-2 number, since 2×2122329581² = 9008565700775271122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122329541) 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 as a sum of consecutive naturals, namely, 1061164790 + 1061164791.

It is an arithmetic number, because the mean of its divisors is an integer number (1061164791).

Almost surely, 2^2122329581 is an apocalyptic number.

It is an amenable number.

2122329581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122329581 is an equidigital number, since it uses as much as digits as its factorization.

2122329581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 2122329581 is about 46068.7484201601. The cubic root of 2122329581 is about 1285.1020284676.

The spelling of 2122329581 in words is "two billion, one hundred twenty-two million, three hundred twenty-nine thousand, five hundred eighty-one".