21320111422 has 8 divisors (see below), whose sum is σ = 31984360200. Its totient is φ = 10658658024.

The previous prime is 21320111401. The next prime is 21320111429. The reversal of 21320111422 is 22411102312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21320111422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320111429) 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, 679672 + ... + 710347.

It is an arithmetic number, because the mean of its divisors is an integer number (3998045025).

Almost surely, 2^21320111422 is an apocalyptic number.

21320111422 is a deficient number, since it is larger than the sum of its proper divisors (10664248778).

21320111422 is a wasteful number, since it uses less digits than its factorization.

21320111422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397690.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21320111422 its reverse (22411102312), we get a palindrome (43731213734).

The spelling of 21320111422 in words is "twenty-one billion, three hundred twenty million, one hundred eleven thousand, four hundred twenty-two".