101019001987 has 2 divisors, whose sum is σ = 101019001988. Its totient is φ = 101019001986.

The previous prime is 101019001943. The next prime is 101019002023. The reversal of 101019001987 is 789100910101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101019001987 is a prime.

It is not a weakly prime, because it can be changed into another prime (101019001087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50509500993 + 50509500994.

It is an arithmetic number, because the mean of its divisors is an integer number (50509500994).

Almost surely, 2^101019001987 is an apocalyptic number.

101019001987 is a deficient number, since it is larger than the sum of its proper divisors (1).

101019001987 is an equidigital number, since it uses as much as digits as its factorization.

101019001987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 37.

The spelling of 101019001987 in words is "one hundred one billion, nineteen million, one thousand, nine hundred eighty-seven".