201102121021987 has 2 divisors, whose sum is σ = 201102121021988. Its totient is φ = 201102121021986.

The previous prime is 201102121021957. The next prime is 201102121022081. The reversal of 201102121021987 is 789120121201102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201102121021987 - 2¹¹ = 201102121019939 is a prime.

It is not a weakly prime, because it can be changed into another prime (201102121021957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100551060510993 + 100551060510994.

It is an arithmetic number, because the mean of its divisors is an integer number (100551060510994).

Almost surely, 2^{201102121021987} is an apocalyptic number.

201102121021987 is a deficient number, since it is larger than the sum of its proper divisors (1).

201102121021987 is an equidigital number, since it uses as much as digits as its factorization.

201102121021987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 37.

The spelling of 201102121021987 in words is "two hundred one trillion, one hundred two billion, one hundred twenty-one million, twenty-one thousand, nine hundred eighty-seven".