121323242993 has 2 divisors, whose sum is σ = 121323242994. Its totient is φ = 121323242992.

The previous prime is 121323242983. The next prime is 121323243011. The reversal of 121323242993 is 399242323121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108964029409 + 12359213584 = 330097^2 + 111172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121323242993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121323242993.

It is not a weakly prime, because it can be changed into another prime (121323242983) 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, 60661621496 + 60661621497.

It is an arithmetic number, because the mean of its divisors is an integer number (60661621497).

Almost surely, 2^121323242993 is an apocalyptic number.

It is an amenable number.

121323242993 is a deficient number, since it is larger than the sum of its proper divisors (1).

121323242993 is an equidigital number, since it uses as much as digits as its factorization.

121323242993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The spelling of 121323242993 in words is "one hundred twenty-one billion, three hundred twenty-three million, two hundred forty-two thousand, nine hundred ninety-three".