20122631899 has 2 divisors, whose sum is σ = 20122631900. Its totient is φ = 20122631898.

The previous prime is 20122631839. The next prime is 20122631983. The reversal of 20122631899 is 99813622102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20122631899 - 2³³ = 11532697307 is a prime.

It is not a weakly prime, because it can be changed into another prime (20122631839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061315949 + 10061315950.

It is an arithmetic number, because the mean of its divisors is an integer number (10061315950).

Almost surely, 2^20122631899 is an apocalyptic number.

20122631899 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122631899 is an equidigital number, since it uses as much as digits as its factorization.

20122631899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 20122631899 in words is "twenty billion, one hundred twenty-two million, six hundred thirty-one thousand, eight hundred ninety-nine".