21200122013133 has 16 divisors (see below), whose sum is σ = 32305775230976. Its totient is φ = 12114045160560.

The previous prime is 21200122013123. The next prime is 21200122013143. The reversal of 21200122013133 is 33131022100212.

It is an interprime number because it is at equal distance from previous prime (21200122013123) and next prime (21200122013143).

It is not a de Polignac number, because 21200122013133 - 2²⁰ = 21200120964557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200122013123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12087433 + ... + 13729758.

It is an arithmetic number, because the mean of its divisors is an integer number (2019110951936).

Almost surely, 2^{21200122013133} is an apocalyptic number.

It is an amenable number.

21200122013133 is a deficient number, since it is larger than the sum of its proper divisors (11105653217843).

21200122013133 is a wasteful number, since it uses less digits than its factorization.

21200122013133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25856304.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21200122013133 its reverse (33131022100212), we get a palindrome (54331144113345).

The spelling of 21200122013133 in words is "twenty-one trillion, two hundred billion, one hundred twenty-two million, thirteen thousand, one hundred thirty-three".