22344001421 has 12 divisors (see below), whose sum is σ = 26037554400. Its totient is φ = 19118436120.

The previous prime is 22344001297. The next prime is 22344001423. The reversal of 22344001421 is 12410044322.

It is not a de Polignac number, because 22344001421 - 2¹⁸ = 22343739277 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 (22344001423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 371321 + ... + 427278.

It is an arithmetic number, because the mean of its divisors is an integer number (2169796200).

Almost surely, 2^22344001421 is an apocalyptic number.

It is an amenable number.

22344001421 is a deficient number, since it is larger than the sum of its proper divisors (3693552979).

22344001421 is an equidigital number, since it uses as much as digits as its factorization.

22344001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799184 (or 799177 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 22344001421 its reverse (12410044322), we get a palindrome (34754045743).

The spelling of 22344001421 in words is "twenty-two billion, three hundred forty-four million, one thousand, four hundred twenty-one".