222505401 has 16 divisors (see below), whose sum is σ = 321789888. Its totient is φ = 136204800.

The previous prime is 222505357. The next prime is 222505403. The reversal of 222505401 is 104505222.

It is a happy number.

222505401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222505401 - 2⁷ = 222505273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222505403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51115 + ... + 55296.

It is an arithmetic number, because the mean of its divisors is an integer number (20111868).

Almost surely, 2^222505401 is an apocalyptic number.

It is an amenable number.

222505401 is a deficient number, since it is larger than the sum of its proper divisors (99284487).

222505401 is a wasteful number, since it uses less digits than its factorization.

222505401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106472.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 222505401 is about 14916.6149310090. The cubic root of 222505401 is about 605.9640400625.

The spelling of 222505401 in words is "two hundred twenty-two million, five hundred five thousand, four hundred one".