201101987 has 2 divisors, whose sum is σ = 201101988. Its totient is φ = 201101986.

The previous prime is 201101969. The next prime is 201102001. The reversal of 201101987 is 789101102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201101987 - 2¹⁴ = 201085603 is a prime.

It is not a weakly prime, because it can be changed into another prime (201101917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550993 + 100550994.

It is an arithmetic number, because the mean of its divisors is an integer number (100550994).

Almost surely, 2^201101987 is an apocalyptic number.

201101987 is a deficient number, since it is larger than the sum of its proper divisors (1).

201101987 is an equidigital number, since it uses as much as digits as its factorization.

201101987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 201101987 is about 14181.0432267869. The cubic root of 201101987 is about 585.8756574736.

The spelling of 201101987 in words is "two hundred one million, one hundred one thousand, nine hundred eighty-seven".