21013232321101 has 16 divisors (see below), whose sum is σ = 21753400435200. Its totient is φ = 20274105031488.

The previous prime is 21013232321083. The next prime is 21013232321113. The reversal of 21013232321101 is 10112323231012.

It is a cyclic number.

It is not a de Polignac number, because 21013232321101 - 2¹⁷ = 21013232190029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013232321201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738665860 + ... + 738694306.

It is an arithmetic number, because the mean of its divisors is an integer number (1359587527200).

Almost surely, 2^{21013232321101} is an apocalyptic number.

It is an amenable number.

21013232321101 is a deficient number, since it is larger than the sum of its proper divisors (740168114099).

21013232321101 is a wasteful number, since it uses less digits than its factorization.

21013232321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45828.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21013232321101 its reverse (10112323231012), we get a palindrome (31125555552113).

The spelling of 21013232321101 in words is "twenty-one trillion, thirteen billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred one".