22120321643264 has 72 divisors (see below), whose sum is σ = 47551881965280. Its totient is φ = 10209128767488.

The previous prime is 22120321643249. The next prime is 22120321643267. The reversal of 22120321643264 is 46234612302122.

It is not an unprimeable number, because it can be changed into a prime (22120321643267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270322484 + ... + 270404300.

Almost surely, 2^{22120321643264} is an apocalyptic number.

It is an amenable number.

22120321643264 is an abundant number, since it is smaller than the sum of its proper divisors (25431560322016).

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

22120321643264 is an equidigital number, since it uses as much as digits as its factorization.

22120321643264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163085 (or 163071 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 22120321643264 its reverse (46234612302122), we get a palindrome (68354933945386).

The spelling of 22120321643264 in words is "twenty-two trillion, one hundred twenty billion, three hundred twenty-one million, six hundred forty-three thousand, two hundred sixty-four".