21407231011 has 8 divisors (see below), whose sum is σ = 23859452880. Its totient is φ = 19087561728.

The previous prime is 21407231003. The next prime is 21407231029. The reversal of 21407231011 is 11013270412.

It is a happy number.

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

It is not a de Polignac number, because 21407231011 - 2³ = 21407231003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21407231051) 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, 33137806 + ... + 33138451.

It is an arithmetic number, because the mean of its divisors is an integer number (2982431610).

Almost surely, 2^21407231011 is an apocalyptic number.

21407231011 is a deficient number, since it is larger than the sum of its proper divisors (2452221869).

21407231011 is a wasteful number, since it uses less digits than its factorization.

21407231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66276293.

The product of its (nonzero) digits is 336, while the sum is 22.

The spelling of 21407231011 in words is "twenty-one billion, four hundred seven million, two hundred thirty-one thousand, eleven".