222129202 has 4 divisors (see below), whose sum is σ = 333193806. Its totient is φ = 111064600.

The previous prime is 222129181. The next prime is 222129203. The reversal of 222129202 is 202921222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 222039801 + 89401 = 14901^2 + 299^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (222129203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55532299 + ... + 55532302.

Almost surely, 2^222129202 is an apocalyptic number.

222129202 is a deficient number, since it is larger than the sum of its proper divisors (111064604).

222129202 is a wasteful number, since it uses less digits than its factorization.

222129202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111064603.

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

The square root of 222129202 is about 14903.9995303274. Note that the first 3 decimals coincide. The cubic root of 222129202 is about 605.6223380016.

The spelling of 222129202 in words is "two hundred twenty-two million, one hundred twenty-nine thousand, two hundred two".