12201001987 has 2 divisors, whose sum is σ = 12201001988. Its totient is φ = 12201001986.

The previous prime is 12201001963. The next prime is 12201002053. The reversal of 12201001987 is 78910010221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12201001987 - 2¹¹ = 12200999939 is a prime.

It is not a weakly prime, because it can be changed into another prime (12201001907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100500993 + 6100500994.

It is an arithmetic number, because the mean of its divisors is an integer number (6100500994).

Almost surely, 2^12201001987 is an apocalyptic number.

12201001987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201001987 is an equidigital number, since it uses as much as digits as its factorization.

12201001987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 12201001987 in words is "twelve billion, two hundred one million, one thousand, nine hundred eighty-seven".