21932685011 has 4 divisors (see below), whose sum is σ = 22196934312. Its totient is φ = 21668435712.

The previous prime is 21932684999. The next prime is 21932685029. The reversal of 21932685011 is 11058623912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21932685011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21932685041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132124526 + ... + 132124691.

It is an arithmetic number, because the mean of its divisors is an integer number (5549233578).

Almost surely, 2^21932685011 is an apocalyptic number.

21932685011 is a deficient number, since it is larger than the sum of its proper divisors (264249301).

21932685011 is an equidigital number, since it uses as much as digits as its factorization.

21932685011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264249300.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 21932685011 in words is "twenty-one billion, nine hundred thirty-two million, six hundred eighty-five thousand, eleven".