102643211 has 12 divisors (see below), whose sum is σ = 113836296. Its totient is φ = 92473920.

The previous prime is 102643207. The next prime is 102643237. The reversal of 102643211 is 112346201.

It is not a de Polignac number, because 102643211 - 2² = 102643207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102643241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9920 + ... + 17426.

It is an arithmetic number, because the mean of its divisors is an integer number (9486358).

Almost surely, 2^102643211 is an apocalyptic number.

102643211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102643211 is a deficient number, since it is larger than the sum of its proper divisors (11193085).

102643211 is a wasteful number, since it uses less digits than its factorization.

102643211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642 (or 7631 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 102643211 is about 10131.2985840908. The cubic root of 102643211 is about 468.2129375922.

Adding to 102643211 its reverse (112346201), we get a palindrome (214989412).

The spelling of 102643211 in words is "one hundred two million, six hundred forty-three thousand, two hundred eleven".