222500146 has 32 divisors (see below), whose sum is σ = 392198400. Its totient is φ = 93577680.

The previous prime is 222500141. The next prime is 222500149. The reversal of 222500146 is 641005222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (222500141) 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, 11785 + ... + 24163.

It is an arithmetic number, because the mean of its divisors is an integer number (12256200).

Almost surely, 2^222500146 is an apocalyptic number.

222500146 is a deficient number, since it is larger than the sum of its proper divisors (169698254).

222500146 is a wasteful number, since it uses less digits than its factorization.

222500146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12454.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 222500146 is about 14916.4387841066. The cubic root of 222500146 is about 605.9592695924.

Adding to 222500146 its reverse (641005222), we get a palindrome (863505368).

The spelling of 222500146 in words is "two hundred twenty-two million, five hundred thousand, one hundred forty-six".