222321424 has 40 divisors (see below), whose sum is σ = 479891160. Its totient is φ = 99068928.

The previous prime is 222321409. The next prime is 222321431. The reversal of 222321424 is 424123222.

It can be written as a sum of positive squares in 4 ways, for example, as 14961424 + 207360000 = 3868^2 + 14400^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222321395 and 222321404.

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, 12397 + ... + 24460.

It is an arithmetic number, because the mean of its divisors is an integer number (11997279).

Almost surely, 2^222321424 is an apocalyptic number.

It is an amenable number.

222321424 is an abundant number, since it is smaller than the sum of its proper divisors (257569736).

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

222321424 is a wasteful number, since it uses less digits than its factorization.

222321424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36907 (or 36901 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 222321424 is about 14910.4468075239. The cubic root of 222321424 is about 605.7969816656.

Adding to 222321424 its reverse (424123222), we get a palindrome (646444646).

The spelling of 222321424 in words is "two hundred twenty-two million, three hundred twenty-one thousand, four hundred twenty-four".