21230122133 has 16 divisors (see below), whose sum is σ = 23964811200. Its totient is φ = 18629882880.

The previous prime is 21230122127. The next prime is 21230122139. The reversal of 21230122133 is 33122103212.

It is an interprime number because it is at equal distance from previous prime (21230122127) and next prime (21230122139).

It is a cyclic number.

It is not a de Polignac number, because 21230122133 - 2²⁰ = 21229073557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230122139) 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 15 ways as a sum of consecutive naturals, for example, 2029685 + ... + 2040117.

It is an arithmetic number, because the mean of its divisors is an integer number (1497800700).

Almost surely, 2^21230122133 is an apocalyptic number.

It is an amenable number.

21230122133 is a deficient number, since it is larger than the sum of its proper divisors (2734689067).

21230122133 is a wasteful number, since it uses less digits than its factorization.

21230122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16852.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21230122133 its reverse (33122103212), we get a palindrome (54352225345).

The spelling of 21230122133 in words is "twenty-one billion, two hundred thirty million, one hundred twenty-two thousand, one hundred thirty-three".