1231122122 has 16 divisors (see below), whose sum is σ = 1861490592. Its totient is φ = 610644720.

The previous prime is 1231122097. The next prime is 1231122187. The reversal of 1231122122 is 2212211321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231122122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129173 + ... + 138375.

It is an arithmetic number, because the mean of its divisors is an integer number (116343162).

Almost surely, 2^1231122122 is an apocalyptic number.

1231122122 is a deficient number, since it is larger than the sum of its proper divisors (630368470).

1231122122 is a wasteful number, since it uses less digits than its factorization.

1231122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9733.

The product of its digits is 96, while the sum is 17.

The square root of 1231122122 is about 35087.3498856782. The cubic root of 1231122122 is about 1071.7669939163.

Adding to 1231122122 its reverse (2212211321), we get a palindrome (3443333443).

The spelling of 1231122122 in words is "one billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred twenty-two".