221450124 has 24 divisors (see below), whose sum is σ = 590533888. Its totient is φ = 63271440.

The previous prime is 221450093. The next prime is 221450137. The reversal of 221450124 is 421054122.

221450124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 221450124.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1318072 + ... + 1318239.

Almost surely, 2^221450124 is an apocalyptic number.

It is an amenable number.

221450124 is an abundant number, since it is smaller than the sum of its proper divisors (369083764).

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

221450124 is a wasteful number, since it uses less digits than its factorization.

221450124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636325 (or 2636323 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 221450124 is about 14881.2003548101. The cubic root of 221450124 is about 605.0045524781.

The spelling of 221450124 in words is "two hundred twenty-one million, four hundred fifty thousand, one hundred twenty-four".