12213254544 has 40 divisors (see below), whose sum is σ = 31555426752. Its totient is φ = 4070501760.

The previous prime is 12213254539. The next prime is 12213254567. The reversal of 12213254544 is 44545231221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438309 + ... + 465339.

Almost surely, 2^12213254544 is an apocalyptic number.

It is an amenable number.

12213254544 is an abundant number, since it is smaller than the sum of its proper divisors (19342172208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213254544 is a wasteful number, since it uses less digits than its factorization.

12213254544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36455 (or 36449 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

Adding to 12213254544 its reverse (44545231221), we get a palindrome (56758485765).

The spelling of 12213254544 in words is "twelve billion, two hundred thirteen million, two hundred fifty-four thousand, five hundred forty-four".