21011313001232 has 40 divisors (see below), whose sum is σ = 40934374556160. Its totient is φ = 10447635208320.

The previous prime is 21011313001187. The next prime is 21011313001307. The reversal of 21011313001232 is 23210031311012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9610283 + ... + 11592245.

It is an arithmetic number, because the mean of its divisors is an integer number (1023359363904).

Almost surely, 2^{21011313001232} is an apocalyptic number.

It is an amenable number.

21011313001232 is a deficient number, since it is larger than the sum of its proper divisors (19923061554928).

21011313001232 is a wasteful number, since it uses less digits than its factorization.

21011313001232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985631 (or 1985625 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21011313001232 its reverse (23210031311012), we get a palindrome (44221344312244).

The spelling of 21011313001232 in words is "twenty-one trillion, eleven billion, three hundred thirteen million, one thousand, two hundred thirty-two".