21132001133 has 2 divisors, whose sum is σ = 21132001134. Its totient is φ = 21132001132.

The previous prime is 21132001063. The next prime is 21132001171. The reversal of 21132001133 is 33110023112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20368142089 + 763859044 = 142717^2 + 27638^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132001133 - 2¹⁸ = 21131738989 is a prime.

It is a super-2 number, since 2×21132001133² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21132001193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566000566 + 10566000567.

It is an arithmetic number, because the mean of its divisors is an integer number (10566000567).

Almost surely, 2^21132001133 is an apocalyptic number.

It is an amenable number.

21132001133 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132001133 is an equidigital number, since it uses as much as digits as its factorization.

21132001133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21132001133 its reverse (33110023112), we get a palindrome (54242024245).

The spelling of 21132001133 in words is "twenty-one billion, one hundred thirty-two million, one thousand, one hundred thirty-three".