1222171752 has 48 divisors (see below), whose sum is σ = 3245751360. Its totient is φ = 383424256.

The previous prime is 1222171739. The next prime is 1222171759. The reversal of 1222171752 is 2571712221.

It is not an unprimeable number, because it can be changed into a prime (1222171759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81168 + ... + 95039.

It is an arithmetic number, because the mean of its divisors is an integer number (67619820).

Almost surely, 2^1222171752 is an apocalyptic number.

1222171752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222171752 is an abundant number, since it is smaller than the sum of its proper divisors (2023579608).

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

1222171752 is a wasteful number, since it uses less digits than its factorization.

1222171752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176250 (or 176229 counting only the distinct ones).

The product of its digits is 3920, while the sum is 30.

The square root of 1222171752 is about 34959.5731095218. The cubic root of 1222171752 is about 1069.1633929805.

Adding to 1222171752 its reverse (2571712221), we get a palindrome (3793883973).

The spelling of 1222171752 in words is "one billion, two hundred twenty-two million, one hundred seventy-one thousand, seven hundred fifty-two".