21132101111 has 8 divisors (see below), whose sum is σ = 23796853248. Its totient is φ = 18591291000.

The previous prime is 21132101099. The next prime is 21132101113. The reversal of 21132101111 is 11110123112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21132101111 - 2³⁰ = 20058359287 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 (21132101113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30985145 + ... + 30985826.

It is an arithmetic number, because the mean of its divisors is an integer number (2974606656).

Almost surely, 2^21132101111 is an apocalyptic number.

21132101111 is a deficient number, since it is larger than the sum of its proper divisors (2664752137).

21132101111 is a wasteful number, since it uses less digits than its factorization.

21132101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61971013.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 21132101111 its reverse (11110123112), we get a palindrome (32242224223).

The spelling of 21132101111 in words is "twenty-one billion, one hundred thirty-two million, one hundred one thousand, one hundred eleven".