12222252444445 has 4 divisors (see below), whose sum is σ = 14666702933340. Its totient is φ = 9777801955552.

The previous prime is 12222252444443. The next prime is 12222252444509. The reversal of 12222252444445 is 54444425222221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5057411779161 + 7164840665284 = 2248869^2 + 2676722^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222252444445 - 2¹ = 12222252444443 is a prime.

It is a super-2 number, since 2×12222252444445² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222252444443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222225244440 + ... + 1222225244449.

It is an arithmetic number, because the mean of its divisors is an integer number (3666675733335).

Almost surely, 2^{12222252444445} is an apocalyptic number.

It is an amenable number.

12222252444445 is a deficient number, since it is larger than the sum of its proper divisors (2444450488895).

12222252444445 is an equidigital number, since it uses as much as digits as its factorization.

12222252444445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444450488894.

The product of its digits is 1638400, while the sum is 43.

Adding to 12222252444445 its reverse (54444425222221), we get a palindrome (66666677666666).

The spelling of 12222252444445 in words is "twelve trillion, two hundred twenty-two billion, two hundred fifty-two million, four hundred forty-four thousand, four hundred forty-five".