121020311323 has 2 divisors, whose sum is σ = 121020311324. Its totient is φ = 121020311322.

The previous prime is 121020311287. The next prime is 121020311333. The reversal of 121020311323 is 323113020121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121020311323 - 2⁹ = 121020310811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121020311323.

It is not a weakly prime, because it can be changed into another prime (121020311333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510155661 + 60510155662.

It is an arithmetic number, because the mean of its divisors is an integer number (60510155662).

Almost surely, 2^121020311323 is an apocalyptic number.

121020311323 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020311323 is an equidigital number, since it uses as much as digits as its factorization.

121020311323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121020311323 its reverse (323113020121), we get a palindrome (444133331444).

The spelling of 121020311323 in words is "one hundred twenty-one billion, twenty million, three hundred eleven thousand, three hundred twenty-three".