121131312130 has 16 divisors (see below), whose sum is σ = 218042000064. Its totient is φ = 48451271920.

The previous prime is 121131312121. The next prime is 121131312241. The reversal of 121131312130 is 31213131121.

It is a junction number, because it is equal to n+sod(n) for n = 121131312098 and 121131312107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317889 + ... + 585931.

It is an arithmetic number, because the mean of its divisors is an integer number (13627625004).

Almost surely, 2^121131312130 is an apocalyptic number.

121131312130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121131312130 is a deficient number, since it is larger than the sum of its proper divisors (96910687934).

121131312130 is a wasteful number, since it uses less digits than its factorization.

121131312130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313241.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 121131312130 its reverse (31213131121), we get a palindrome (152344443251).

The spelling of 121131312130 in words is "one hundred twenty-one billion, one hundred thirty-one million, three hundred twelve thousand, one hundred thirty".