222242020400 has 30 divisors (see below), whose sum is σ = 533936454972. Its totient is φ = 88896808000.

The previous prime is 222242020393. The next prime is 222242020409. The reversal of 222242020400 is 4020242222.

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

It is not an unprimeable number, because it can be changed into a prime (222242020409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277802126 + ... + 277802925.

Almost surely, 2^222242020400 is an apocalyptic number.

222242020400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222242020400 is an abundant number, since it is smaller than the sum of its proper divisors (311694434572).

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

222242020400 is a wasteful number, since it uses less digits than its factorization.

222242020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555605069 (or 555605058 counting only the distinct ones).

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

Adding to 222242020400 its reverse (4020242222), we get a palindrome (226262262622).

The spelling of 222242020400 in words is "two hundred twenty-two billion, two hundred forty-two million, twenty thousand, four hundred".