21323122122133 has 8 divisors (see below), whose sum is σ = 23755202364600. Its totient is φ = 19004161891008.

The previous prime is 21323122122103. The next prime is 21323122122157. The reversal of 21323122122133 is 33122122132312.

It can be written as a sum of positive squares in 4 ways, for example, as 390877540804 + 20932244581329 = 625202^2 + 4575177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21323122122133 - 2⁵ = 21323122122101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323122122103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28280002438 + ... + 28280003191.

It is an arithmetic number, because the mean of its divisors is an integer number (2969400295575).

Almost surely, 2^{21323122122133} is an apocalyptic number.

It is an amenable number.

21323122122133 is a deficient number, since it is larger than the sum of its proper divisors (2432080242467).

21323122122133 is a wasteful number, since it uses less digits than its factorization.

21323122122133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56560005671.

The product of its digits is 5184, while the sum is 28.

Adding to 21323122122133 its reverse (33122122132312), we get a palindrome (54445244254445).

The spelling of 21323122122133 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred thirty-three".