123211233212321 has 2 divisors, whose sum is σ = 123211233212322. Its totient is φ = 123211233212320.

The previous prime is 123211233212231. The next prime is 123211233212339. The reversal of 123211233212321 is 123212332112321.

Together with previous prime (123211233212231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108517534980625 + 14693698231696 = 10417175^2 + 3833236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123211233212321 is a prime.

It is not a weakly prime, because it can be changed into another prime (123211233212371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61605616606160 + 61605616606161.

It is an arithmetic number, because the mean of its divisors is an integer number (61605616606161).

Almost surely, 2^{123211233212321} is an apocalyptic number.

It is an amenable number.

123211233212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123211233212321 is an equidigital number, since it uses as much as digits as its factorization.

123211233212321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

Adding to 123211233212321 its reverse (123212332112321), we get a palindrome (246423565324642).

The spelling of 123211233212321 in words is "one hundred twenty-three trillion, two hundred eleven billion, two hundred thirty-three million, two hundred twelve thousand, three hundred twenty-one".