22143124544 has 14 divisors (see below), whose sum is σ = 43940262894. Its totient is φ = 11071562240.

The previous prime is 22143124541. The next prime is 22143124547. The reversal of 22143124544 is 44542134122.

It is an interprime number because it is at equal distance from previous prime (22143124541) and next prime (22143124547).

It can be written as a sum of positive squares in only one way, i.e., 11558830144 + 10584294400 = 107512^2 + 102880^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 22143124544.

It is not an unprimeable number, because it can be changed into a prime (22143124541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172993097 + ... + 172993224.

Almost surely, 2^22143124544 is an apocalyptic number.

It is an amenable number.

22143124544 is a deficient number, since it is larger than the sum of its proper divisors (21797138350).

22143124544 is an equidigital number, since it uses as much as digits as its factorization.

22143124544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345986333 (or 345986323 counting only the distinct ones).

The product of its digits is 30720, while the sum is 32.

Adding to 22143124544 its reverse (44542134122), we get a palindrome (66685258666).

The spelling of 22143124544 in words is "twenty-two billion, one hundred forty-three million, one hundred twenty-four thousand, five hundred forty-four".