102221123 has 4 divisors (see below), whose sum is σ = 102243648. Its totient is φ = 102198600.

The previous prime is 102221117. The next prime is 102221129. The reversal of 102221123 is 321122201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321122201 = 15559 ⋅20639.

It is an interprime number because it is at equal distance from previous prime (102221117) and next prime (102221129).

It is a cyclic number.

It is not a de Polignac number, because 102221123 - 2¹⁶ = 102155587 is a prime.

It is a super-2 number, since 2×102221123² = 20898315974762258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102221098 and 102221107.

It is not an unprimeable number, because it can be changed into a prime (102221129) 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, 1811 + ... + 14412.

It is an arithmetic number, because the mean of its divisors is an integer number (25560912).

Almost surely, 2^102221123 is an apocalyptic number.

102221123 is a deficient number, since it is larger than the sum of its proper divisors (22525).

102221123 is an equidigital number, since it uses as much as digits as its factorization.

102221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22524.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 102221123 is about 10110.4462314974. The cubic root of 102221123 is about 467.5702629196.

Adding to 102221123 its reverse (321122201), we get a palindrome (423343324).

The spelling of 102221123 in words is "one hundred two million, two hundred twenty-one thousand, one hundred twenty-three".