1222195772 has 12 divisors (see below), whose sum is σ = 2444391600. Its totient is φ = 523798176.

The previous prime is 1222195771. The next prime is 1222195811. The reversal of 1222195772 is 2775912221.

1222195772 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222195771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21824897 + ... + 21824952.

It is an arithmetic number, because the mean of its divisors is an integer number (203699300).

Almost surely, 2^1222195772 is an apocalyptic number.

It is an amenable number.

1222195772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1222195772 is a wasteful number, since it uses less digits than its factorization.

1222195772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43649860 (or 43649858 counting only the distinct ones).

The product of its digits is 35280, while the sum is 38.

The square root of 1222195772 is about 34959.9166474979. The cubic root of 1222195772 is about 1069.1703972161.

The spelling of 1222195772 in words is "one billion, two hundred twenty-two million, one hundred ninety-five thousand, seven hundred seventy-two".