102111223 has 4 divisors (see below), whose sum is σ = 102183048. Its totient is φ = 102039400.

The previous prime is 102111203. The next prime is 102111239. The reversal of 102111223 is 322111201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322111201 = 241 ⋅1336561.

It is a cyclic number.

It is not a de Polignac number, because 102111223 - 2²⁵ = 68556791 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 (102111203) 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, 33736 + ... + 36637.

It is an arithmetic number, because the mean of its divisors is an integer number (25545762).

Almost surely, 2^102111223 is an apocalyptic number.

102111223 is a deficient number, since it is larger than the sum of its proper divisors (71825).

102111223 is an equidigital number, since it uses as much as digits as its factorization.

102111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71824.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102111223 is about 10105.0097971254. The cubic root of 102111223 is about 467.4026380793.

Adding to 102111223 its reverse (322111201), we get a palindrome (424222424).

The spelling of 102111223 in words is "one hundred two million, one hundred eleven thousand, two hundred twenty-three".