123212220303313 has 4 divisors (see below), whose sum is σ = 123212411518900. Its totient is φ = 123212029087728.

The previous prime is 123212220303281. The next prime is 123212220303323. The reversal of 123212220303313 is 313303022212321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39514386886209 + 83697833417104 = 6286047^2 + 9148652^2 .

It is a cyclic number.

It is not a de Polignac number, because 123212220303313 - 2⁵ = 123212220303281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123212220303323) 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, 94637970 + ... + 95931067.

It is an arithmetic number, because the mean of its divisors is an integer number (30803102879725).

Almost surely, 2^{123212220303313} is an apocalyptic number.

It is an amenable number.

123212220303313 is a deficient number, since it is larger than the sum of its proper divisors (191215587).

123212220303313 is an equidigital number, since it uses as much as digits as its factorization.

123212220303313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191215586.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 123212220303313 its reverse (313303022212321), we get a palindrome (436515242515634).

The spelling of 123212220303313 in words is "one hundred twenty-three trillion, two hundred twelve billion, two hundred twenty million, three hundred three thousand, three hundred thirteen".