123211331210213 has 4 divisors (see below), whose sum is σ = 123239727465120. Its totient is φ = 123182934955308.

The previous prime is 123211331210159. The next prime is 123211331210291. The reversal of 123211331210213 is 312012133112321.

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 123211331210213 - 2⁴⁰ = 122111819582437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123211331210813) 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, 14198120945 + ... + 14198129622.

It is an arithmetic number, because the mean of its divisors is an integer number (30809931866280).

Almost surely, 2^{123211331210213} is an apocalyptic number.

It is an amenable number.

123211331210213 is a deficient number, since it is larger than the sum of its proper divisors (28396254907).

123211331210213 is an equidigital number, since it uses as much as digits as its factorization.

123211331210213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28396254906.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 123211331210213 its reverse (312012133112321), we get a palindrome (435223464322534).

The spelling of 123211331210213 in words is "one hundred twenty-three trillion, two hundred eleven billion, three hundred thirty-one million, two hundred ten thousand, two hundred thirteen".