222145012 has 6 divisors (see below), whose sum is σ = 388753778. Its totient is φ = 111072504.

The previous prime is 222144991. The next prime is 222145037. The reversal of 222145012 is 210541222.

It can be written as a sum of positive squares in only one way, i.e., 214505316 + 7639696 = 14646^2 + 2764^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 27768123 + ... + 27768130.

Almost surely, 2^222145012 is an apocalyptic number.

It is an amenable number.

222145012 is a deficient number, since it is larger than the sum of its proper divisors (166608766).

222145012 is a wasteful number, since it uses less digits than its factorization.

222145012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55536257 (or 55536255 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 222145012 is about 14904.5299154318. The cubic root of 222145012 is about 605.6367060090.

Adding to 222145012 its reverse (210541222), we get a palindrome (432686234).

The spelling of 222145012 in words is "two hundred twenty-two million, one hundred forty-five thousand, twelve".