21323013130133 has 32 divisors (see below), whose sum is σ = 25093521048960. Its totient is φ = 17862941226240.

The previous prime is 21323013130129. The next prime is 21323013130141. The reversal of 21323013130133 is 33103131032312.

It is not a de Polignac number, because 21323013130133 - 2² = 21323013130129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323013132133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 655410935 + ... + 655443467.

It is an arithmetic number, because the mean of its divisors is an integer number (784172532780).

Almost surely, 2^{21323013130133} is an apocalyptic number.

It is an amenable number.

21323013130133 is a deficient number, since it is larger than the sum of its proper divisors (3770507918827).

21323013130133 is a wasteful number, since it uses less digits than its factorization.

21323013130133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40229.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 21323013130133 its reverse (33103131032312), we get a palindrome (54426144162445).

The spelling of 21323013130133 in words is "twenty-one trillion, three hundred twenty-three billion, thirteen million, one hundred thirty thousand, one hundred thirty-three".