21332321101 has 16 divisors (see below), whose sum is σ = 26446823424. Its totient is φ = 16755110784.

The previous prime is 21332321093. The next prime is 21332321137. The reversal of 21332321101 is 10112323312.

It is a cyclic number.

It is not a de Polignac number, because 21332321101 - 2³ = 21332321093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332321161) 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, 843085 + ... + 868018.

It is an arithmetic number, because the mean of its divisors is an integer number (1652926464).

Almost surely, 2^21332321101 is an apocalyptic number.

It is an amenable number.

21332321101 is a deficient number, since it is larger than the sum of its proper divisors (5114502323).

21332321101 is a wasteful number, since it uses less digits than its factorization.

21332321101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711260.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21332321101 its reverse (10112323312), we get a palindrome (31444644413).

The spelling of 21332321101 in words is "twenty-one billion, three hundred thirty-two million, three hundred twenty-one thousand, one hundred one".