22144164220 has 24 divisors (see below), whose sum is σ = 46520624304. Its totient is φ = 8854260096.

The previous prime is 22144164199. The next prime is 22144164221. The reversal of 22144164220 is 2246144122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144164221) 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, 159202 + ... + 263881.

It is an arithmetic number, because the mean of its divisors is an integer number (1938359346).

Almost surely, 2^22144164220 is an apocalyptic number.

22144164220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22144164220 is an abundant number, since it is smaller than the sum of its proper divisors (24376460084).

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

22144164220 is a wasteful number, since it uses less digits than its factorization.

22144164220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425709 (or 425707 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The spelling of 22144164220 in words is "twenty-two billion, one hundred forty-four million, one hundred sixty-four thousand, two hundred twenty".