102221423 has 4 divisors (see below), whose sum is σ = 103213968. Its totient is φ = 101228880.

The previous prime is 102221401. The next prime is 102221429. The reversal of 102221423 is 324122201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324122201 = 13 ⋅24932477.

It is a cyclic number.

It is not a de Polignac number, because 102221423 - 2²⁰ = 101172847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496118 + ... + 496323.

It is an arithmetic number, because the mean of its divisors is an integer number (25803492).

Almost surely, 2^102221423 is an apocalyptic number.

102221423 is a deficient number, since it is larger than the sum of its proper divisors (992545).

102221423 is an equidigital number, since it uses as much as digits as its factorization.

102221423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992544.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 102221423 is about 10110.4610676269. The cubic root of 102221423 is about 467.5707203298.

Adding to 102221423 its reverse (324122201), we get a palindrome (426343624).

The spelling of 102221423 in words is "one hundred two million, two hundred twenty-one thousand, four hundred twenty-three".