22144223345 has 4 divisors (see below), whose sum is σ = 26573068020. Its totient is φ = 17715378672.

The previous prime is 22144223329. The next prime is 22144223357. The reversal of 22144223345 is 54332244122.

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 11371236496 + 10772986849 = 106636^2 + 103793^2 .

It is a cyclic number.

It is not a de Polignac number, because 22144223345 - 2⁴ = 22144223329 is a prime.

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, 2214422330 + ... + 2214422339.

It is an arithmetic number, because the mean of its divisors is an integer number (6643267005).

Almost surely, 2^22144223345 is an apocalyptic number.

It is an amenable number.

22144223345 is a deficient number, since it is larger than the sum of its proper divisors (4428844675).

22144223345 is an equidigital number, since it uses as much as digits as its factorization.

22144223345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428844674.

The product of its digits is 46080, while the sum is 32.

Adding to 22144223345 its reverse (54332244122), we get a palindrome (76476467467).

The spelling of 22144223345 in words is "twenty-two billion, one hundred forty-four million, two hundred twenty-three thousand, three hundred forty-five".