23211012133 has 2 divisors, whose sum is σ = 23211012134. Its totient is φ = 23211012132.

The previous prime is 23211012119. The next prime is 23211012157. The reversal of 23211012133 is 33121011232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22831814404 + 379197729 = 151102^2 + 19473^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211012133 - 2²⁵ = 23177457701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23211012133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211012103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605506066 + 11605506067.

It is an arithmetic number, because the mean of its divisors is an integer number (11605506067).

Almost surely, 2^23211012133 is an apocalyptic number.

It is an amenable number.

23211012133 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211012133 is an equidigital number, since it uses as much as digits as its factorization.

23211012133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23211012133 its reverse (33121011232), we get a palindrome (56332023365).

Subtracting 23211012133 from its reverse (33121011232), we obtain a palindrome (9909999099).

The spelling of 23211012133 in words is "twenty-three billion, two hundred eleven million, twelve thousand, one hundred thirty-three".