21202100133 has 16 divisors (see below), whose sum is σ = 29769868800. Its totient is φ = 13385159280.

The previous prime is 21202100123. The next prime is 21202100141. The reversal of 21202100133 is 33100120212.

It is not a de Polignac number, because 21202100133 - 2³³ = 12612165541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202100123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60288 + ... + 214566.

It is an arithmetic number, because the mean of its divisors is an integer number (1860616800).

Almost surely, 2^21202100133 is an apocalyptic number.

It is an amenable number.

21202100133 is a deficient number, since it is larger than the sum of its proper divisors (8567768667).

21202100133 is a wasteful number, since it uses less digits than its factorization.

21202100133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156712.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21202100133 its reverse (33100120212), we get a palindrome (54302220345).

The spelling of 21202100133 in words is "twenty-one billion, two hundred two million, one hundred thousand, one hundred thirty-three".