1213321130 has 32 divisors (see below), whose sum is σ = 2531139840. Its totient is φ = 410135040.

The previous prime is 1213321079. The next prime is 1213321147. The reversal of 1213321130 is 311233121.

It is a junction number, because it is equal to n+sod(n) for n = 1213321099 and 1213321108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117095 + ... + 127034.

It is an arithmetic number, because the mean of its divisors is an integer number (79098120).

Almost surely, 2^1213321130 is an apocalyptic number.

1213321130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213321130 is an abundant number, since it is smaller than the sum of its proper divisors (1317818710).

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

1213321130 is a wasteful number, since it uses less digits than its factorization.

1213321130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244214.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1213321130 is about 34832.7594370587. The cubic root of 1213321130 is about 1066.5762782566.

Adding to 1213321130 its reverse (311233121), we get a palindrome (1524554251).

The spelling of 1213321130 in words is "one billion, two hundred thirteen million, three hundred twenty-one thousand, one hundred thirty".