123210223321 has 4 divisors (see below), whose sum is σ = 123213655972. Its totient is φ = 123206790672.

The previous prime is 123210223307. The next prime is 123210223337. The reversal of 123210223321 is 123322012321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123322012321 = 71 ⋅1736929751.

It can be written as a sum of positive squares in 2 ways, for example, as 92607619225 + 30602604096 = 304315^2 + 174936^2 .

It is a cyclic number.

It is not a de Polignac number, because 123210223321 - 2¹⁵ = 123210190553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123210223292 and 123210223301.

It is not an unprimeable number, because it can be changed into a prime (123210223421) 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, 1661910 + ... + 1734463.

It is an arithmetic number, because the mean of its divisors is an integer number (30803413993).

Almost surely, 2^123210223321 is an apocalyptic number.

It is an amenable number.

123210223321 is a deficient number, since it is larger than the sum of its proper divisors (3432651).

123210223321 is an equidigital number, since it uses as much as digits as its factorization.

123210223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432650.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123210223321 its reverse (123322012321), we get a palindrome (246532235642).

The spelling of 123210223321 in words is "one hundred twenty-three billion, two hundred ten million, two hundred twenty-three thousand, three hundred twenty-one".