21115334625362 has 4 divisors (see below), whose sum is σ = 31673001938046. Its totient is φ = 10557667312680.

The previous prime is 21115334625337. The next prime is 21115334625487. The reversal of 21115334625362 is 26352643351112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11669049168001 + 9446285457361 = 3415999^2 + 3073481^2 .

It is a super-2 number, since 2×21115334625362² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278833656339 + ... + 5278833656342.

Almost surely, 2^{21115334625362} is an apocalyptic number.

21115334625362 is a deficient number, since it is larger than the sum of its proper divisors (10557667312684).

21115334625362 is a wasteful number, since it uses less digits than its factorization.

21115334625362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10557667312683.

The product of its digits is 777600, while the sum is 44.

Adding to 21115334625362 its reverse (26352643351112), we get a palindrome (47467977976474).

The spelling of 21115334625362 in words is "twenty-one trillion, one hundred fifteen billion, three hundred thirty-four million, six hundred twenty-five thousand, three hundred sixty-two".