22212112045 has 4 divisors (see below), whose sum is σ = 26654534460. Its totient is φ = 17769689632.

The previous prime is 22212112007. The next prime is 22212112057. The reversal of 22212112045 is 54021121222.

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 5794558884 + 16417553161 = 76122^2 + 128131^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212112045 - 2⁹ = 22212111533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2221211200 + ... + 2221211209.

It is an arithmetic number, because the mean of its divisors is an integer number (6663633615).

Almost surely, 2^22212112045 is an apocalyptic number.

It is an amenable number.

22212112045 is a deficient number, since it is larger than the sum of its proper divisors (4442422415).

22212112045 is an equidigital number, since it uses as much as digits as its factorization.

22212112045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4442422414.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 22212112045 its reverse (54021121222), we get a palindrome (76233233267).

The spelling of 22212112045 in words is "twenty-two billion, two hundred twelve million, one hundred twelve thousand, forty-five".