12121663210 has 16 divisors (see below), whose sum is σ = 21823828992. Its totient is φ = 4847590800.

The previous prime is 12121663193. The next prime is 12121663219. The reversal of 12121663210 is 1236612121.

It is a happy number.

12121663210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12121663219) by changing a digit.

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, 86106 + ... + 177925.

It is an arithmetic number, because the mean of its divisors is an integer number (1363989312).

Almost surely, 2^12121663210 is an apocalyptic number.

12121663210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121663210 is a deficient number, since it is larger than the sum of its proper divisors (9702165782).

12121663210 is a wasteful number, since it uses less digits than its factorization.

12121663210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268629.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 12121663210 in words is "twelve billion, one hundred twenty-one million, six hundred sixty-three thousand, two hundred ten".