121303320311 has 2 divisors, whose sum is σ = 121303320312. Its totient is φ = 121303320310.

The previous prime is 121303320283. The next prime is 121303320331. The reversal of 121303320311 is 113023303121.

It is an a-pointer prime, because the next prime (121303320331) can be obtained adding 121303320311 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121303320311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121303320331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60651660155 + 60651660156.

It is an arithmetic number, because the mean of its divisors is an integer number (60651660156).

Almost surely, 2^121303320311 is an apocalyptic number.

121303320311 is a deficient number, since it is larger than the sum of its proper divisors (1).

121303320311 is an equidigital number, since it uses as much as digits as its factorization.

121303320311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 121303320311 its reverse (113023303121), we get a palindrome (234326623432).

The spelling of 121303320311 in words is "one hundred twenty-one billion, three hundred three million, three hundred twenty thousand, three hundred eleven".