1213231122 has 40 divisors (see below), whose sum is σ = 2720798256. Its totient is φ = 404074008.

The previous prime is 1213231079. The next prime is 1213231139. The reversal of 1213231122 is 2211323121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1213231095 and 1213231104.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 261273 + ... + 265875.

Almost surely, 2^1213231122 is an apocalyptic number.

1213231122 is an abundant number, since it is smaller than the sum of its proper divisors (1507567134).

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

1213231122 is a wasteful number, since it uses less digits than its factorization.

1213231122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244 (or 6235 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1213231122 is about 34831.4674109490. The cubic root of 1213231122 is about 1066.5499036035.

Adding to 1213231122 its reverse (2211323121), we get a palindrome (3424554243).

The spelling of 1213231122 in words is "one billion, two hundred thirteen million, two hundred thirty-one thousand, one hundred twenty-two".