20126376522021 has 32 divisors (see below), whose sum is σ = 33458247825408. Its totient is φ = 10454818616640.

The previous prime is 20126376521899. The next prime is 20126376522071. The reversal of 20126376522021 is 12022567362102.

It is not a de Polignac number, because 20126376522021 - 2¹⁹ = 20126375997733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126376522071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3671400 + ... + 7330206.

It is an arithmetic number, because the mean of its divisors is an integer number (1045570244544).

Almost surely, 2^{20126376522021} is an apocalyptic number.

20126376522021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20126376522021 is a deficient number, since it is larger than the sum of its proper divisors (13331871303387).

20126376522021 is a wasteful number, since it uses less digits than its factorization.

20126376522021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682641.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20126376522021 in words is "twenty trillion, one hundred twenty-six billion, three hundred seventy-six million, five hundred twenty-two thousand, twenty-one".