102321999 has 12 divisors (see below), whose sum is σ = 159167736. Its totient is φ = 62967312.

The previous prime is 102321977. The next prime is 102322013. The reversal of 102321999 is 999123201.

It is a happy number.

It is not a de Polignac number, because 102321999 - 2⁸ = 102321743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102321299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437157 + ... + 437390.

It is an arithmetic number, because the mean of its divisors is an integer number (13263978).

Almost surely, 2^102321999 is an apocalyptic number.

102321999 is a deficient number, since it is larger than the sum of its proper divisors (56845737).

102321999 is a wasteful number, since it uses less digits than its factorization.

102321999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874566 (or 874563 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 102321999 is about 10115.4337030105. The cubic root of 102321999 is about 467.7240181959.

The spelling of 102321999 in words is "one hundred two million, three hundred twenty-one thousand, nine hundred ninety-nine".