222145002 has 24 divisors (see below), whose sum is σ = 481596960. Its totient is φ = 74004840.

The previous prime is 222144991. The next prime is 222145037. The reversal of 222145002 is 200541222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46899 + ... + 51417.

It is an arithmetic number, because the mean of its divisors is an integer number (20066540).

Almost surely, 2^222145002 is an apocalyptic number.

222145002 is an abundant number, since it is smaller than the sum of its proper divisors (259451958).

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

222145002 is a wasteful number, since it uses less digits than its factorization.

222145002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258 (or 7255 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 222145002 is about 14904.5295799633. The cubic root of 222145002 is about 605.6366969213.

Adding to 222145002 its reverse (200541222), we get a palindrome (422686224).

The spelling of 222145002 in words is "two hundred twenty-two million, one hundred forty-five thousand, two".