102101851 has 2 divisors, whose sum is σ = 102101852. Its totient is φ = 102101850.

The previous prime is 102101843. The next prime is 102101921. The reversal of 102101851 is 158101201.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (158101201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102101851 - 2³ = 102101843 is a prime.

It is not a weakly prime, because it can be changed into another prime (102101551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050925 + 51050926.

It is an arithmetic number, because the mean of its divisors is an integer number (51050926).

Almost surely, 2^102101851 is an apocalyptic number.

102101851 is a deficient number, since it is larger than the sum of its proper divisors (1).

102101851 is an equidigital number, since it uses as much as digits as its factorization.

102101851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 102101851 is about 10104.5460561076. The cubic root of 102101851 is about 467.3883378831.

The spelling of 102101851 in words is "one hundred two million, one hundred one thousand, eight hundred fifty-one".