1213323123211 has 2 divisors, whose sum is σ = 1213323123212. Its totient is φ = 1213323123210.

The previous prime is 1213323123139. The next prime is 1213323123283. The reversal of 1213323123211 is 1123213233121.

It is a balanced prime because it is at equal distance from previous prime (1213323123139) and next prime (1213323123283).

It is a cyclic number.

It is not a de Polignac number, because 1213323123211 - 2²⁹ = 1212786252299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213323123511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606661561605 + 606661561606.

It is an arithmetic number, because the mean of its divisors is an integer number (606661561606).

Almost surely, 2^{1213323123211} is an apocalyptic number.

1213323123211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213323123211 is an equidigital number, since it uses as much as digits as its factorization.

1213323123211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

Adding to 1213323123211 its reverse (1123213233121), we get a palindrome (2336536356332).

The spelling of 1213323123211 in words is "one trillion, two hundred thirteen billion, three hundred twenty-three million, one hundred twenty-three thousand, two hundred eleven".