12121266110 has 32 divisors (see below), whose sum is σ = 22861472832. Its totient is φ = 4618437120.

The previous prime is 12121266109. The next prime is 12121266191. The reversal of 12121266110 is 1166212121.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53909 + ... + 164768.

It is an arithmetic number, because the mean of its divisors is an integer number (714421026).

Almost surely, 2^12121266110 is an apocalyptic number.

12121266110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121266110 is a deficient number, since it is larger than the sum of its proper divisors (10740206722).

12121266110 is a wasteful number, since it uses less digits than its factorization.

12121266110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218948.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 12121266110 its reverse (1166212121), we get a palindrome (13287478231).

The spelling of 12121266110 in words is "twelve billion, one hundred twenty-one million, two hundred sixty-six thousand, one hundred ten".