12222222545 has 16 divisors (see below), whose sum is σ = 15802214400. Its totient is φ = 9021445824.

The previous prime is 12222222499. The next prime is 12222222547. The reversal of 12222222545 is 54522222221.

It is a cyclic number.

It is not a de Polignac number, because 12222222545 - 2²⁸ = 11953787089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12222222547) 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, 100856 + ... + 186054.

It is an arithmetic number, because the mean of its divisors is an integer number (987638400).

Almost surely, 2^12222222545 is an apocalyptic number.

It is an amenable number.

12222222545 is a deficient number, since it is larger than the sum of its proper divisors (3579991855).

12222222545 is a wasteful number, since it uses less digits than its factorization.

12222222545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87424.

The product of its digits is 12800, while the sum is 29.

Adding to 12222222545 its reverse (54522222221), we get a palindrome (66744444766).

The spelling of 12222222545 in words is "twelve billion, two hundred twenty-two million, two hundred twenty-two thousand, five hundred forty-five".