123023100221 has 16 divisors (see below), whose sum is σ = 140954064000. Its totient is φ = 105181424640.

The previous prime is 123023100163. The next prime is 123023100223. The reversal of 123023100221 is 122001320321.

It is a cyclic number.

It is not a de Polignac number, because 123023100221 - 2³⁴ = 105843231037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123023100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023100223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7456301 + ... + 7472781.

It is an arithmetic number, because the mean of its divisors is an integer number (8809629000).

Almost surely, 2^123023100221 is an apocalyptic number.

It is an amenable number.

123023100221 is a deficient number, since it is larger than the sum of its proper divisors (17930963779).

123023100221 is a wasteful number, since it uses less digits than its factorization.

123023100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19124.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 123023100221 its reverse (122001320321), we get a palindrome (245024420542).

The spelling of 123023100221 in words is "one hundred twenty-three billion, twenty-three million, one hundred thousand, two hundred twenty-one".