22004013421 has 8 divisors (see below), whose sum is σ = 23747816960. Its totient is φ = 20267522352.

The previous prime is 22004013377. The next prime is 22004013443. The reversal of 22004013421 is 12431040022.

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

It is a cyclic number.

It is not a de Polignac number, because 22004013421 - 2²⁷ = 21869795693 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 (22004013491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821861 + ... + 1833898.

It is an arithmetic number, because the mean of its divisors is an integer number (2968477120).

Almost surely, 2^22004013421 is an apocalyptic number.

It is an amenable number.

22004013421 is a deficient number, since it is larger than the sum of its proper divisors (1743803539).

22004013421 is a wasteful number, since it uses less digits than its factorization.

22004013421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656235.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22004013421 its reverse (12431040022), we get a palindrome (34435053443).

The spelling of 22004013421 in words is "twenty-two billion, four million, thirteen thousand, four hundred twenty-one".