1231122130 has 64 divisors (see below), whose sum is σ = 2584120320. Its totient is φ = 413568000.

The previous prime is 1231122097. The next prime is 1231122187. The reversal of 1231122130 is 312211321.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1711911 + ... + 1712629.

It is an arithmetic number, because the mean of its divisors is an integer number (40376880).

Almost surely, 2^1231122130 is an apocalyptic number.

1231122130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231122130 is an abundant number, since it is smaller than the sum of its proper divisors (1352998190).

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

1231122130 is a wasteful number, since it uses less digits than its factorization.

1231122130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1231122130 is about 35087.3499996794. The cubic root of 1231122130 is about 1071.7669962378.

Adding to 1231122130 its reverse (312211321), we get a palindrome (1543333451).

The spelling of 1231122130 in words is "one billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred thirty".