222402401 has 32 divisors (see below), whose sum is σ = 256650240. Its totient is φ = 191289600.

The previous prime is 222402379. The next prime is 222402437. The reversal of 222402401 is 104204222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222402401 - 2¹⁸ = 222140257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222402401.

It is not an unprimeable number, because it can be changed into a prime (222402451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2040335 + ... + 2040443.

It is an arithmetic number, because the mean of its divisors is an integer number (8020320).

Almost surely, 2^222402401 is an apocalyptic number.

It is an amenable number.

222402401 is a deficient number, since it is larger than the sum of its proper divisors (34247839).

222402401 is a wasteful number, since it uses less digits than its factorization.

222402401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 222402401 is about 14913.1620054233. The cubic root of 222402401 is about 605.8705233373.

Adding to 222402401 its reverse (104204222), we get a palindrome (326606623).

The spelling of 222402401 in words is "two hundred twenty-two million, four hundred two thousand, four hundred one".