21033125332402 has 16 divisors (see below), whose sum is σ = 31560487212600. Its totient is φ = 10512963254272.

The previous prime is 21033125332393. The next prime is 21033125332409. The reversal of 21033125332402 is 20423352133012.

It can be written as a sum of positive squares in 4 ways, for example, as 20040493708921 + 992631623481 = 4476661^2 + 996309^2 .

It is a super-2 number, since 2×21033125332402² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21033125332409) 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 7 ways as a sum of consecutive naturals, for example, 153018618 + ... + 153156010.

Almost surely, 2^{21033125332402} is an apocalyptic number.

21033125332402 is a deficient number, since it is larger than the sum of its proper divisors (10527361880198).

21033125332402 is a wasteful number, since it uses less digits than its factorization.

21033125332402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163037.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 21033125332402 its reverse (20423352133012), we get a palindrome (41456477465414).

The spelling of 21033125332402 in words is "twenty-one trillion, thirty-three billion, one hundred twenty-five million, three hundred thirty-two thousand, four hundred two".