12121200211110 has 64 divisors (see below), whose sum is σ = 29247290818560. Its totient is φ = 3214945883520.

The previous prime is 12121200211103. The next prime is 12121200211139. The reversal of 12121200211110 is 1111200212121.

It is a happy number.

12121200211110 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 Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12121200211110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41735859 + ... + 42025281.

It is an arithmetic number, because the mean of its divisors is an integer number (456988919040).

Almost surely, 2^{12121200211110} is an apocalyptic number.

12121200211110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121200211110 is an abundant number, since it is smaller than the sum of its proper divisors (17126090607450).

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

12121200211110 is a wasteful number, since it uses less digits than its factorization.

12121200211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296933.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12121200211110 its reverse (1111200212121), we get a palindrome (13232400423231).

The spelling of 12121200211110 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, two hundred eleven thousand, one hundred ten".