102211001987 has 2 divisors, whose sum is σ = 102211001988. Its totient is φ = 102211001986.

The previous prime is 102211001983. The next prime is 102211002013. The reversal of 102211001987 is 789100112201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102211001987 - 2² = 102211001983 is a prime.

It is not a weakly prime, because it can be changed into another prime (102211001983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105500993 + 51105500994.

It is an arithmetic number, because the mean of its divisors is an integer number (51105500994).

Almost surely, 2^102211001987 is an apocalyptic number.

102211001987 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211001987 is an equidigital number, since it uses as much as digits as its factorization.

102211001987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 32.

The spelling of 102211001987 in words is "one hundred two billion, two hundred eleven million, one thousand, nine hundred eighty-seven".