22144221532 has 6 divisors (see below), whose sum is σ = 38752387688. Its totient is φ = 11072110764.

The previous prime is 22144221511. The next prime is 22144221569. The reversal of 22144221532 is 23512244122.

It is a self number, because there is not a number n which added to its sum of digits gives 22144221532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2768027688 + ... + 2768027695.

Almost surely, 2^22144221532 is an apocalyptic number.

It is an amenable number.

22144221532 is a deficient number, since it is larger than the sum of its proper divisors (16608166156).

22144221532 is a wasteful number, since it uses less digits than its factorization.

22144221532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536055387 (or 5536055385 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

Adding to 22144221532 its reverse (23512244122), we get a palindrome (45656465654).

The spelling of 22144221532 in words is "twenty-two billion, one hundred forty-four million, two hundred twenty-one thousand, five hundred thirty-two".