222902401 has 4 divisors (see below), whose sum is σ = 222933204. Its totient is φ = 222871600.

The previous prime is 222902389. The next prime is 222902447. The reversal of 222902401 is 104209222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 85544001 + 137358400 = 9249^2 + 11720^2 .

It is a cyclic number.

It is not a de Polignac number, because 222902401 - 2¹⁹ = 222378113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222905401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2031 + ... + 21211.

It is an arithmetic number, because the mean of its divisors is an integer number (55733301).

Almost surely, 2^222902401 is an apocalyptic number.

It is an amenable number.

222902401 is a deficient number, since it is larger than the sum of its proper divisors (30803).

222902401 is a wasteful number, since it uses less digits than its factorization.

222902401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30802.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 222902401 is about 14929.9163092095. The cubic root of 222902401 is about 606.3242182705.

The spelling of 222902401 in words is "two hundred twenty-two million, nine hundred two thousand, four hundred one".