222123022400 has 84 divisors (see below), whose sum is σ = 547061331072. Its totient is φ = 88767951360.

The previous prime is 222123022393. The next prime is 222123022463. The reversal of 222123022400 is 4220321222.

It is a super-2 number, since 2×222123022400² (a number of 23 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 1701869 + ... + 1827731.

Almost surely, 2^222123022400 is an apocalyptic number.

222123022400 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 222123022400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273530665536).

222123022400 is an abundant number, since it is smaller than the sum of its proper divisors (324938308672).

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

222123022400 is a wasteful number, since it uses less digits than its factorization.

222123022400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126988 (or 126973 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 222123022400 its reverse (4220321222), we get a palindrome (226343343622).

The spelling of 222123022400 in words is "two hundred twenty-two billion, one hundred twenty-three million, twenty-two thousand, four hundred".