20331124399 has 2 divisors, whose sum is σ = 20331124400. Its totient is φ = 20331124398.

The previous prime is 20331124357. The next prime is 20331124409. The reversal of 20331124399 is 99342113302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20331124399 - 2⁷ = 20331124271 is a prime.

It is a super-2 number, since 2×20331124399² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20331124199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165562199 + 10165562200.

It is an arithmetic number, because the mean of its divisors is an integer number (10165562200).

Almost surely, 2^20331124399 is an apocalyptic number.

20331124399 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331124399 is an equidigital number, since it uses as much as digits as its factorization.

20331124399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 20331124399 in words is "twenty billion, three hundred thirty-one million, one hundred twenty-four thousand, three hundred ninety-nine".