1222203188 has 12 divisors (see below), whose sum is σ = 2142658560. Its totient is φ = 610015032.

The previous prime is 1222203149. The next prime is 1222203193. The reversal of 1222203188 is 8813022221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222203188.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269108 + ... + 273611.

It is an arithmetic number, because the mean of its divisors is an integer number (178554880).

Almost surely, 2^1222203188 is an apocalyptic number.

It is an amenable number.

1222203188 is a deficient number, since it is larger than the sum of its proper divisors (920455372).

1222203188 is a wasteful number, since it uses less digits than its factorization.

1222203188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543286 (or 543284 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1222203188 is about 34960.0227116631. The cubic root of 1222203188 is about 1069.1725597042.

The spelling of 1222203188 in words is "one billion, two hundred twenty-two million, two hundred three thousand, one hundred eighty-eight".