123211310331221 has 8 divisors (see below), whose sum is σ = 142914611557440. Its totient is φ = 104033430471168.

The previous prime is 123211310331139. The next prime is 123211310331251. The reversal of 123211310331221 is 122133013112321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123211310331221 - 2¹⁰ = 123211310330197 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 (123211310331251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131355341036 + ... + 131355341973.

It is an arithmetic number, because the mean of its divisors is an integer number (17864326444680).

Almost surely, 2^{123211310331221} is an apocalyptic number.

It is an amenable number.

123211310331221 is a deficient number, since it is larger than the sum of its proper divisors (19703301226219).

123211310331221 is an equidigital number, since it uses as much as digits as its factorization.

123211310331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262710683083.

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

Adding to 123211310331221 its reverse (122133013112321), we get a palindrome (245344323443542).

The spelling of 123211310331221 in words is "one hundred twenty-three trillion, two hundred eleven billion, three hundred ten million, three hundred thirty-one thousand, two hundred twenty-one".