220001124 has 48 divisors (see below), whose sum is σ = 590220288. Its totient is φ = 62477088.

The previous prime is 220001113. The next prime is 220001137. The reversal of 220001124 is 421100022.

It is a super-2 number, since 2×220001124² = 96800989122526752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6187 + ... + 21869.

It is an arithmetic number, because the mean of its divisors is an integer number (12296256).

Almost surely, 2^220001124 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 220001124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295110144).

220001124 is an abundant number, since it is smaller than the sum of its proper divisors (370219164).

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

220001124 is a wasteful number, since it uses less digits than its factorization.

220001124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15864 (or 15862 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 220001124 is about 14832.4348641752. The cubic root of 220001124 is about 603.6821017652.

Adding to 220001124 its reverse (421100022), we get a palindrome (641101146).

The spelling of 220001124 in words is "two hundred twenty million, one thousand, one hundred twenty-four".