12012121313111 has 16 divisors (see below), whose sum is σ = 12246942188544. Its totient is φ = 11778941363904.

The previous prime is 12012121313107. The next prime is 12012121313183. The reversal of 12012121313111 is 11131312121021.

It is a cyclic number.

It is not a de Polignac number, because 12012121313111 - 2² = 12012121313107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012121313611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397908560 + ... + 397938746.

It is an arithmetic number, because the mean of its divisors is an integer number (765433886784).

Almost surely, 2^{12012121313111} is an apocalyptic number.

12012121313111 is a deficient number, since it is larger than the sum of its proper divisors (234820875433).

12012121313111 is a wasteful number, since it uses less digits than its factorization.

12012121313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57110.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 12012121313111 its reverse (11131312121021), we get a palindrome (23143433434132).

The spelling of 12012121313111 in words is "twelve trillion, twelve billion, one hundred twenty-one million, three hundred thirteen thousand, one hundred eleven".