102221923 has 4 divisors (see below), whose sum is σ = 102368448. Its totient is φ = 102075400.

The previous prime is 102221893. The next prime is 102221927. The reversal of 102221923 is 329122201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102221923 - 2⁵ = 102221891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102221894 and 102221903.

It is not an unprimeable number, because it can be changed into a prime (102221927) 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 3 ways as a sum of consecutive naturals, for example, 72211 + ... + 73612.

It is an arithmetic number, because the mean of its divisors is an integer number (25592112).

Almost surely, 2^102221923 is an apocalyptic number.

102221923 is a deficient number, since it is larger than the sum of its proper divisors (146525).

102221923 is an equidigital number, since it uses as much as digits as its factorization.

102221923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146524.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 102221923 is about 10110.4857944611. The cubic root of 102221923 is about 467.5714826781.

The spelling of 102221923 in words is "one hundred two million, two hundred twenty-one thousand, nine hundred twenty-three".