12111334139621 has 2 divisors, whose sum is σ = 12111334139622. Its totient is φ = 12111334139620.

The previous prime is 12111334139617. The next prime is 12111334139627. The reversal of 12111334139621 is 12693143311121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11973330062500 + 138004077121 = 3460250^2 + 371489^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111334139621 - 2² = 12111334139617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111334139627) by changing a digit.

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 as a sum of consecutive naturals, namely, 6055667069810 + 6055667069811.

It is an arithmetic number, because the mean of its divisors is an integer number (6055667069811).

Almost surely, 2^{12111334139621} is an apocalyptic number.

It is an amenable number.

12111334139621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111334139621 is an equidigital number, since it uses as much as digits as its factorization.

12111334139621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The spelling of 12111334139621 in words is "twelve trillion, one hundred eleven billion, three hundred thirty-four million, one hundred thirty-nine thousand, six hundred twenty-one".