22144020213 has 16 divisors (see below), whose sum is σ = 33853191680. Its totient is φ = 12612504816.

The previous prime is 22144020209. The next prime is 22144020229. The reversal of 22144020213 is 31202044122.

It is not a de Polignac number, because 22144020213 - 2² = 22144020209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22144020213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144020233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1710943 + ... + 1723836.

It is an arithmetic number, because the mean of its divisors is an integer number (2115824480).

Almost surely, 2^22144020213 is an apocalyptic number.

It is an amenable number.

22144020213 is a deficient number, since it is larger than the sum of its proper divisors (11709171467).

22144020213 is a wasteful number, since it uses less digits than its factorization.

22144020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435096.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22144020213 its reverse (31202044122), we get a palindrome (53346064335).

The spelling of 22144020213 in words is "twenty-two billion, one hundred forty-four million, twenty thousand, two hundred thirteen".