222022420400 has 120 divisors (see below), whose sum is σ = 586088529600. Its totient is φ = 80154374400.

The previous prime is 222022420397. The next prime is 222022420421. The reversal of 222022420400 is 4024220222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430091 + ... + 793109.

It is an arithmetic number, because the mean of its divisors is an integer number (4884071080).

Almost surely, 2^222022420400 is an apocalyptic number.

222022420400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222022420400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293044264800).

222022420400 is an abundant number, since it is smaller than the sum of its proper divisors (364066109200).

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

222022420400 is a wasteful number, since it uses less digits than its factorization.

222022420400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363187 (or 363176 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 222022420400 its reverse (4024220222), we get a palindrome (226046640622).

The spelling of 222022420400 in words is "two hundred twenty-two billion, twenty-two million, four hundred twenty thousand, four hundred".