1231230122 has 4 divisors (see below), whose sum is σ = 1846845186. Its totient is φ = 615615060.

The previous prime is 1231230071. The next prime is 1231230139. The reversal of 1231230122 is 2210321321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 629558281 + 601671841 = 25091^2 + 24529^2 .

It is a super-2 number, since 2×1231230122² = 3031855226640269768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231230122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307807529 + ... + 307807532.

Almost surely, 2^1231230122 is an apocalyptic number.

1231230122 is a deficient number, since it is larger than the sum of its proper divisors (615615064).

1231230122 is an equidigital number, since it uses as much as digits as its factorization.

1231230122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615615063.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1231230122 is about 35088.8888681303. Note that the first 4 decimals coincide. The cubic root of 1231230122 is about 1071.7983331985.

Adding to 1231230122 its reverse (2210321321), we get a palindrome (3441551443).

The spelling of 1231230122 in words is "one billion, two hundred thirty-one million, two hundred thirty thousand, one hundred twenty-two".