12122001109987 has 2 divisors, whose sum is σ = 12122001109988. Its totient is φ = 12122001109986.

The previous prime is 12122001109979. The next prime is 12122001109993. The reversal of 12122001109987 is 78990110022121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12122001109987 - 2³ = 12122001109979 is a prime.

It is a super-2 number, since 2×12122001109987² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12122001109997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061000554993 + 6061000554994.

It is an arithmetic number, because the mean of its divisors is an integer number (6061000554994).

Almost surely, 2^{12122001109987} is an apocalyptic number.

12122001109987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122001109987 is an equidigital number, since it uses as much as digits as its factorization.

12122001109987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 12122001109987 in words is "twelve trillion, one hundred twenty-two billion, one million, one hundred nine thousand, nine hundred eighty-seven".