22212110052 has 72 divisors (see below), whose sum is σ = 61719289632. Its totient is φ = 6679545600.

The previous prime is 22212110051. The next prime is 22212110059. The reversal of 22212110052 is 25001121222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22212110051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162213 + ... + 265964.

It is an arithmetic number, because the mean of its divisors is an integer number (857212356).

Almost surely, 2^22212110052 is an apocalyptic number.

22212110052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22212110052 is an abundant number, since it is smaller than the sum of its proper divisors (39507179580).

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

22212110052 is a wasteful number, since it uses less digits than its factorization.

22212110052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428329 (or 428324 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 22212110052 its reverse (25001121222), we get a palindrome (47213231274).

The spelling of 22212110052 in words is "twenty-two billion, two hundred twelve million, one hundred ten thousand, fifty-two".