102213999 has 6 divisors (see below), whose sum is σ = 147642456. Its totient is φ = 68142660.

The previous prime is 102213971. The next prime is 102214003. The reversal of 102213999 is 999312201.

It is a happy number.

It is not a de Polignac number, because 102213999 - 2⁸ = 102213743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102213799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5678547 + ... + 5678564.

It is an arithmetic number, because the mean of its divisors is an integer number (24607076).

Almost surely, 2^102213999 is an apocalyptic number.

102213999 is a deficient number, since it is larger than the sum of its proper divisors (45428457).

102213999 is a wasteful number, since it uses less digits than its factorization.

102213999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11357117 (or 11357114 counting only the distinct ones).

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

The square root of 102213999 is about 10110.0939164777. The cubic root of 102213999 is about 467.5594006900.

The spelling of 102213999 in words is "one hundred two million, two hundred thirteen thousand, nine hundred ninety-nine".