12102112209989 has 2 divisors, whose sum is σ = 12102112209990. Its totient is φ = 12102112209988.

The previous prime is 12102112209931. The next prime is 12102112210021. The reversal of 12102112209989 is 98990221120121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9678383220100 + 2423728989889 = 3111010^2 + 1556833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12102112209989 is a prime.

It is a super-2 number, since 2×12102112209989² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102112209289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051056104994 + 6051056104995.

It is an arithmetic number, because the mean of its divisors is an integer number (6051056104995).

Almost surely, 2^{12102112209989} is an apocalyptic number.

It is an amenable number.

12102112209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102112209989 is an equidigital number, since it uses as much as digits as its factorization.

12102112209989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 47.

The spelling of 12102112209989 in words is "twelve trillion, one hundred two billion, one hundred twelve million, two hundred nine thousand, nine hundred eighty-nine".