21320112234 has 8 divisors (see below), whose sum is σ = 42640224480. Its totient is φ = 7106704076.

The previous prime is 21320112221. The next prime is 21320112343. The reversal of 21320112234 is 43221102312.

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

21320112234 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21320112234.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1776676014 + ... + 1776676025.

It is an arithmetic number, because the mean of its divisors is an integer number (5330028060).

Almost surely, 2^21320112234 is an apocalyptic number.

21320112234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21320112234 is a wasteful number, since it uses less digits than its factorization.

21320112234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553352044.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21320112234 its reverse (43221102312), we get a palindrome (64541214546).

The spelling of 21320112234 in words is "twenty-one billion, three hundred twenty million, one hundred twelve thousand, two hundred thirty-four".