123110303221 has 2 divisors, whose sum is σ = 123110303222. Its totient is φ = 123110303220.

The previous prime is 123110303189. The next prime is 123110303249. The reversal of 123110303221 is 122303011321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92635618321 + 30474684900 = 304361^2 + 174570^2 .

It is an emirp because it is prime and its reverse (122303011321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123110303221 - 2⁵ = 123110303189 is a prime.

It is a super-2 number, since 2×123110303221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123110303291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61555151610 + 61555151611.

It is an arithmetic number, because the mean of its divisors is an integer number (61555151611).

Almost surely, 2^123110303221 is an apocalyptic number.

It is an amenable number.

123110303221 is a deficient number, since it is larger than the sum of its proper divisors (1).

123110303221 is an equidigital number, since it uses as much as digits as its factorization.

123110303221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123110303221 its reverse (122303011321), we get a palindrome (245413314542).

The spelling of 123110303221 in words is "one hundred twenty-three billion, one hundred ten million, three hundred three thousand, two hundred twenty-one".