121833749321 has 2 divisors, whose sum is σ = 121833749322. Its totient is φ = 121833749320.

The previous prime is 121833749299. The next prime is 121833749327. The reversal of 121833749321 is 123947338121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90261790096 + 31571959225 = 300436^2 + 177685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121833749321 is a prime.

It is a super-2 number, since 2×121833749321² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121833749327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60916874660 + 60916874661.

It is an arithmetic number, because the mean of its divisors is an integer number (60916874661).

Almost surely, 2^121833749321 is an apocalyptic number.

It is an amenable number.

121833749321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121833749321 is an equidigital number, since it uses as much as digits as its factorization.

121833749321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The spelling of 121833749321 in words is "one hundred twenty-one billion, eight hundred thirty-three million, seven hundred forty-nine thousand, three hundred twenty-one".