21133032220013 has 6 divisors (see below), whose sum is σ = 24583323194766. Its totient is φ = 18114027617112.

The previous prime is 21133032220009. The next prime is 21133032220039. The reversal of 21133032220013 is 31002223033112.

It can be written as a sum of positive squares in only one way, i.e., 21049578832324 + 83453387689 = 4587982^2 + 288883^2 .

It is not a de Polignac number, because 21133032220013 - 2² = 21133032220009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133032223013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215643185870 + ... + 215643185967.

It is an arithmetic number, because the mean of its divisors is an integer number (4097220532461).

Almost surely, 2^{21133032220013} is an apocalyptic number.

It is an amenable number.

21133032220013 is a deficient number, since it is larger than the sum of its proper divisors (3450290974753).

21133032220013 is an equidigital number, since it uses as much as digits as its factorization.

21133032220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431286371851 (or 431286371844 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21133032220013 its reverse (31002223033112), we get a palindrome (52135255253125).

The spelling of 21133032220013 in words is "twenty-one trillion, one hundred thirty-three billion, thirty-two million, two hundred twenty thousand, thirteen".