1231224221252 has 48 divisors (see below), whose sum is σ = 2201240204352. Its totient is φ = 602363099520.

The previous prime is 1231224221251. The next prime is 1231224221321. The reversal of 1231224221252 is 2521224221321.

It is not an unprimeable number, because it can be changed into a prime (1231224221251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207868763 + ... + 207874685.

It is an arithmetic number, because the mean of its divisors is an integer number (45859170924).

Almost surely, 2^{1231224221252} is an apocalyptic number.

It is an amenable number.

1231224221252 is a deficient number, since it is larger than the sum of its proper divisors (970015983100).

1231224221252 is a wasteful number, since it uses less digits than its factorization.

1231224221252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8468 (or 8466 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

Adding to 1231224221252 its reverse (2521224221321), we get a palindrome (3752448442573).

The spelling of 1231224221252 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-four million, two hundred twenty-one thousand, two hundred fifty-two".