21132210787133 has 2 divisors, whose sum is σ = 21132210787134. Its totient is φ = 21132210787132.

The previous prime is 21132210787063. The next prime is 21132210787147. The reversal of 21132210787133 is 33178701223112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21105966139129 + 26244648004 = 4594123^2 + 162002^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132210787133 - 2⁸ = 21132210786877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21132210717133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566105393566 + 10566105393567.

It is an arithmetic number, because the mean of its divisors is an integer number (10566105393567).

Almost surely, 2^{21132210787133} is an apocalyptic number.

It is an amenable number.

21132210787133 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132210787133 is an equidigital number, since it uses as much as digits as its factorization.

21132210787133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 21132210787133 in words is "twenty-one trillion, one hundred thirty-two billion, two hundred ten million, seven hundred eighty-seven thousand, one hundred thirty-three".