102223409 has 2 divisors, whose sum is σ = 102223410. Its totient is φ = 102223408.

The previous prime is 102223403. The next prime is 102223411. The reversal of 102223409 is 904322201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71031184 + 31192225 = 8428^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 102223409 - 2¹⁶ = 102157873 is a prime.

Together with 102223411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102223403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111704 + 51111705.

It is an arithmetic number, because the mean of its divisors is an integer number (51111705).

Almost surely, 2^102223409 is an apocalyptic number.

It is an amenable number.

102223409 is a deficient number, since it is larger than the sum of its proper divisors (1).

102223409 is an equidigital number, since it uses as much as digits as its factorization.

102223409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 102223409 is about 10110.5592822554. The cubic root of 102223409 is about 467.5737483625.

It can be divided in two parts, 10222 and 3409, that added together give a palindrome (13631).

The spelling of 102223409 in words is "one hundred two million, two hundred twenty-three thousand, four hundred nine".