21332111101 has 16 divisors (see below), whose sum is σ = 24953854464. Its totient is φ = 17854192944.

The previous prime is 21332111081. The next prime is 21332111107. The reversal of 21332111101 is 10111123312.

It is a happy number.

It is not a de Polignac number, because 21332111101 - 2⁷ = 21332110973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332111107) 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, 1280910 + ... + 1297456.

It is an arithmetic number, because the mean of its divisors is an integer number (1559615904).

Almost surely, 2^21332111101 is an apocalyptic number.

It is an amenable number.

21332111101 is a deficient number, since it is larger than the sum of its proper divisors (3621743363).

21332111101 is a wasteful number, since it uses less digits than its factorization.

21332111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20880.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21332111101 its reverse (10111123312), we get a palindrome (31443234413).

It can be divided in two parts, 2133211 and 1101, that added together give a palindrome (2134312).

The spelling of 21332111101 in words is "twenty-one billion, three hundred thirty-two million, one hundred eleven thousand, one hundred one".