211202210201987 has 2 divisors, whose sum is σ = 211202210201988. Its totient is φ = 211202210201986.

The previous prime is 211202210201971. The next prime is 211202210202031. The reversal of 211202210201987 is 789102012202112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211202210201987 - 2⁴ = 211202210201971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211202210201987.

It is not a weakly prime, because it can be changed into another prime (211202210201287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601105100993 + 105601105100994.

It is an arithmetic number, because the mean of its divisors is an integer number (105601105100994).

Almost surely, 2^{211202210201987} is an apocalyptic number.

211202210201987 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202210201987 is an equidigital number, since it uses as much as digits as its factorization.

211202210201987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 211202210201987 in words is "two hundred eleven trillion, two hundred two billion, two hundred ten million, two hundred one thousand, nine hundred eighty-seven".