1222233729 has 24 divisors (see below), whose sum is σ = 1723351392. Its totient is φ = 770402880.

The previous prime is 1222233709. The next prime is 1222233737. The reversal of 1222233729 is 9273322221.

It is not a de Polignac number, because 1222233729 - 2⁵ = 1222233697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222233729.

It is not an unprimeable number, because it can be changed into a prime (1222233709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 823422 + ... + 824904.

It is an arithmetic number, because the mean of its divisors is an integer number (71806308).

Almost surely, 2^1222233729 is an apocalyptic number.

1222233729 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1222233729 is a deficient number, since it is larger than the sum of its proper divisors (501117663).

1222233729 is a wasteful number, since it uses less digits than its factorization.

1222233729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285 (or 2266 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 1222233729 is about 34960.4595078497. The cubic root of 1222233729 is about 1069.1814652958.

The spelling of 1222233729 in words is "one billion, two hundred twenty-two million, two hundred thirty-three thousand, seven hundred twenty-nine".