12121102012110 has 128 divisors (see below), whose sum is σ = 36338257234944. Its totient is φ = 2519248849920.

The previous prime is 12121102012027. The next prime is 12121102012157. The reversal of 12121102012110 is 1121020112121.

It is a happy number.

It is a super-3 number, since 3×12121102012110³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 12121102012110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32951151 + ... + 33316970.

It is an arithmetic number, because the mean of its divisors is an integer number (283892634648).

Almost surely, 2^{12121102012110} is an apocalyptic number.

12121102012110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121102012110 is an abundant number, since it is smaller than the sum of its proper divisors (24217155222834).

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

12121102012110 is a wasteful number, since it uses less digits than its factorization.

12121102012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66268218.

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

Adding to 12121102012110 its reverse (1121020112121), we get a palindrome (13242122124231).

The spelling of 12121102012110 in words is "twelve trillion, one hundred twenty-one billion, one hundred two million, twelve thousand, one hundred ten".