222424129 has 4 divisors (see below), whose sum is σ = 222888960. Its totient is φ = 221959300.

The previous prime is 222424087. The next prime is 222424151. The reversal of 222424129 is 921424222.

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 a cyclic number.

It is not a de Polignac number, because 222424129 - 2²⁷ = 88206401 is a prime.

It is a super-2 number, since 2×222424129² = 98944986322817282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222424097 and 222424106.

It is not an unprimeable number, because it can be changed into a prime (222424529) 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, 231697 + ... + 232654.

It is an arithmetic number, because the mean of its divisors is an integer number (55722240).

Almost surely, 2^222424129 is an apocalyptic number.

It is an amenable number.

222424129 is a deficient number, since it is larger than the sum of its proper divisors (464831).

222424129 is an equidigital number, since it uses as much as digits as its factorization.

222424129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464830.

The product of its digits is 4608, while the sum is 28.

The square root of 222424129 is about 14913.8904716375. The cubic root of 222424129 is about 605.8902532292.

The spelling of 222424129 in words is "two hundred twenty-two million, four hundred twenty-four thousand, one hundred twenty-nine".