12121113722489 has 2 divisors, whose sum is σ = 12121113722490. Its totient is φ = 12121113722488.

The previous prime is 12121113722467. The next prime is 12121113722533. The reversal of 12121113722489 is 98422731112121.

It is an a-pointer prime, because the next prime (12121113722533) can be obtained adding 12121113722489 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10607495317225 + 1513618405264 = 3256915^2 + 1230292^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121113722489 - 2²⁴ = 12121096945273 is a prime.

It is a super-2 number, since 2×12121113722489² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12121113722089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060556861244 + 6060556861245.

It is an arithmetic number, because the mean of its divisors is an integer number (6060556861245).

Almost surely, 2^{12121113722489} is an apocalyptic number.

It is an amenable number.

12121113722489 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121113722489 is an equidigital number, since it uses as much as digits as its factorization.

12121113722489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 44.

The spelling of 12121113722489 in words is "twelve trillion, one hundred twenty-one billion, one hundred thirteen million, seven hundred twenty-two thousand, four hundred eighty-nine".