22013400221 has 4 divisors (see below), whose sum is σ = 22117729344. Its totient is φ = 21909071100.

The previous prime is 22013400191. The next prime is 22013400229. The reversal of 22013400221 is 12200431022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22013400221 - 2³⁴ = 4833531037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22013400221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013400229) 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, 52164245 + ... + 52164666.

It is an arithmetic number, because the mean of its divisors is an integer number (5529432336).

Almost surely, 2^22013400221 is an apocalyptic number.

It is an amenable number.

22013400221 is a deficient number, since it is larger than the sum of its proper divisors (104329123).

22013400221 is a wasteful number, since it uses less digits than its factorization.

22013400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104329122.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22013400221 its reverse (12200431022), we get a palindrome (34213831243).

The spelling of 22013400221 in words is "twenty-two billion, thirteen million, four hundred thousand, two hundred twenty-one".