12021201187 has 2 divisors, whose sum is σ = 12021201188. Its totient is φ = 12021201186.

The previous prime is 12021201169. The next prime is 12021201239. The reversal of 12021201187 is 78110212021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021201187 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021201287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010600593 + 6010600594.

It is an arithmetic number, because the mean of its divisors is an integer number (6010600594).

Almost surely, 2^12021201187 is an apocalyptic number.

12021201187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021201187 is an equidigital number, since it uses as much as digits as its factorization.

12021201187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

The spelling of 12021201187 in words is "twelve billion, twenty-one million, two hundred one thousand, one hundred eighty-seven".