12201220019987 has 2 divisors, whose sum is σ = 12201220019988. Its totient is φ = 12201220019986.

The previous prime is 12201220019869. The next prime is 12201220020007. The reversal of 12201220019987 is 78991002210221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12201220019987 - 2²⁴ = 12201203242771 is a prime.

It is a super-2 number, since 2×12201220019987² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12201220019687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100610009993 + 6100610009994.

It is an arithmetic number, because the mean of its divisors is an integer number (6100610009994).

Almost surely, 2^{12201220019987} is an apocalyptic number.

12201220019987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201220019987 is an equidigital number, since it uses as much as digits as its factorization.

12201220019987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 12201220019987 in words is "twelve trillion, two hundred one billion, two hundred twenty million, nineteen thousand, nine hundred eighty-seven".