121211231323 has 32 divisors (see below), whose sum is σ = 151641907200. Its totient is φ = 94332836736.

The previous prime is 121211231321. The next prime is 121211231363. The reversal of 121211231323 is 323132112121.

It is a cyclic number.

It is not a de Polignac number, because 121211231323 - 2¹ = 121211231321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121211231294 and 121211231303.

It is not an unprimeable number, because it can be changed into a prime (121211231321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1694598 + ... + 1764676.

It is an arithmetic number, because the mean of its divisors is an integer number (4738809600).

Almost surely, 2^121211231323 is an apocalyptic number.

121211231323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121211231323 is a deficient number, since it is larger than the sum of its proper divisors (30430675877).

121211231323 is a wasteful number, since it uses less digits than its factorization.

121211231323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70411.

The product of its digits is 432, while the sum is 22.

Adding to 121211231323 its reverse (323132112121), we get a palindrome (444343343444).

The spelling of 121211231323 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred thirty-one thousand, three hundred twenty-three".