12121131210 has 32 divisors (see below), whose sum is σ = 29156414400. Its totient is φ = 3225001728.

The previous prime is 12121131199. The next prime is 12121131241. The reversal of 12121131210 is 1213112121.

12121131210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12121131210.

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 15 ways as a sum of consecutive naturals, for example, 442735 + ... + 469314.

It is an arithmetic number, because the mean of its divisors is an integer number (911137950).

Almost surely, 2^12121131210 is an apocalyptic number.

12121131210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121131210 is an abundant number, since it is smaller than the sum of its proper divisors (17035283190).

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

12121131210 is a wasteful number, since it uses less digits than its factorization.

12121131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912502.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12121131210 its reverse (1213112121), we get a palindrome (13334243331).

The spelling of 12121131210 in words is "twelve billion, one hundred twenty-one million, one hundred thirty-one thousand, two hundred ten".