12201011989 has 2 divisors, whose sum is σ = 12201011990. Its totient is φ = 12201011988.

The previous prime is 12201011983. The next prime is 12201012001. The reversal of 12201011989 is 98911010221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9756500625 + 2444511364 = 98775^2 + 49442^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201011989 - 2⁵ = 12201011957 is a prime.

It is a super-2 number, since 2×12201011989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201011983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100505994 + 6100505995.

It is an arithmetic number, because the mean of its divisors is an integer number (6100505995).

Almost surely, 2^12201011989 is an apocalyptic number.

It is an amenable number.

12201011989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201011989 is an equidigital number, since it uses as much as digits as its factorization.

12201011989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 12201011989 in words is "twelve billion, two hundred one million, eleven thousand, nine hundred eighty-nine".