121230311339 has 2 divisors, whose sum is σ = 121230311340. Its totient is φ = 121230311338.

The previous prime is 121230311317. The next prime is 121230311351. The reversal of 121230311339 is 933113032121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121230311339 - 2¹⁶ = 121230245803 is a prime.

It is not a weakly prime, because it can be changed into another prime (121230361339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615155669 + 60615155670.

It is an arithmetic number, because the mean of its divisors is an integer number (60615155670).

Almost surely, 2^121230311339 is an apocalyptic number.

121230311339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230311339 is an equidigital number, since it uses as much as digits as its factorization.

121230311339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The spelling of 121230311339 in words is "one hundred twenty-one billion, two hundred thirty million, three hundred eleven thousand, three hundred thirty-nine".