123313010221 has 4 divisors (see below), whose sum is σ = 128674445472. Its totient is φ = 117951574972.

The previous prime is 123313010207. The next prime is 123313010251. The reversal of 123313010221 is 122010313321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123313010221 - 2²⁹ = 122776139309 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 (123313010251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2680717591 + ... + 2680717636.

It is an arithmetic number, because the mean of its divisors is an integer number (32168611368).

Almost surely, 2^123313010221 is an apocalyptic number.

It is an amenable number.

123313010221 is a deficient number, since it is larger than the sum of its proper divisors (5361435251).

123313010221 is an equidigital number, since it uses as much as digits as its factorization.

123313010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361435250.

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

Adding to 123313010221 its reverse (122010313321), we get a palindrome (245323323542).

The spelling of 123313010221 in words is "one hundred twenty-three billion, three hundred thirteen million, ten thousand, two hundred twenty-one".