102101998 has 8 divisors (see below), whose sum is σ = 153811008. Its totient is φ = 50831664.

The previous prime is 102101971. The next prime is 102102019. The reversal of 102101998 is 899101201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 109086 + ... + 110017.

It is an arithmetic number, because the mean of its divisors is an integer number (19226376).

Almost surely, 2^102101998 is an apocalyptic number.

102101998 is a deficient number, since it is larger than the sum of its proper divisors (51709010).

102101998 is a wasteful number, since it uses less digits than its factorization.

102101998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219338.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 102101998 is about 10104.5533300587. The cubic root of 102101998 is about 467.3885621888.

The spelling of 102101998 in words is "one hundred two million, one hundred one thousand, nine hundred ninety-eight".