222524121 has 4 divisors (see below), whose sum is σ = 296698832. Its totient is φ = 148349412.

The previous prime is 222524117. The next prime is 222524147. The reversal of 222524121 is 121425222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 222524121 - 2² = 222524117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222524171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37087351 + ... + 37087356.

It is an arithmetic number, because the mean of its divisors is an integer number (74174708).

Almost surely, 2^222524121 is an apocalyptic number.

It is an amenable number.

222524121 is a deficient number, since it is larger than the sum of its proper divisors (74174711).

222524121 is an equidigital number, since it uses as much as digits as its factorization.

222524121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74174710.

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

The square root of 222524121 is about 14917.2424060213. The cubic root of 222524121 is about 605.9810334009.

Adding to 222524121 its reverse (121425222), we get a palindrome (343949343).

The spelling of 222524121 in words is "two hundred twenty-two million, five hundred twenty-four thousand, one hundred twenty-one".