222401124 has 72 divisors (see below), whose sum is σ = 615119232. Its totient is φ = 67193280.

The previous prime is 222401119. The next prime is 222401131. The reversal of 222401124 is 421104222.

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

It is a junction number, because it is equal to n+sod(n) for n = 222401097 and 222401106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182742 + ... + 183954.

Almost surely, 2^222401124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222401124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307559616).

222401124 is an abundant number, since it is smaller than the sum of its proper divisors (392718108).

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

222401124 is a wasteful number, since it uses less digits than its factorization.

222401124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 222401124 is about 14913.1191908333. The cubic root of 222401124 is about 605.8693637303.

Adding to 222401124 its reverse (421104222), we get a palindrome (643505346).

The spelling of 222401124 in words is "two hundred twenty-two million, four hundred one thousand, one hundred twenty-four".