252220004022 has 128 divisors (see below), whose sum is σ = 616128307200. Its totient is φ = 67277952000.

The previous prime is 252220003979. The next prime is 252220004081. The reversal of 252220004022 is 220400022252.

It is a super-2 number, since 2×252220004022² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 252220004022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68000304 + ... + 68004012.

It is an arithmetic number, because the mean of its divisors is an integer number (4813502400).

Almost surely, 2^252220004022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252220004022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308064153600).

252220004022 is an abundant number, since it is smaller than the sum of its proper divisors (363908303178).

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

252220004022 is a wasteful number, since it uses less digits than its factorization.

252220004022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582.

The product of its (nonzero) digits is 1280, while the sum is 21.

Adding to 252220004022 its reverse (220400022252), we get a palindrome (472620026274).

The spelling of 252220004022 in words is "two hundred fifty-two billion, two hundred twenty million, four thousand, twenty-two".