121213031339 has 2 divisors, whose sum is σ = 121213031340. Its totient is φ = 121213031338.

The previous prime is 121213031297. The next prime is 121213031371. The reversal of 121213031339 is 933130312121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121213031339 is a prime.

It is a super-2 number, since 2×121213031339² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121213031399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606515669 + 60606515670.

It is an arithmetic number, because the mean of its divisors is an integer number (60606515670).

Almost surely, 2^121213031339 is an apocalyptic number.

121213031339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213031339 is an equidigital number, since it uses as much as digits as its factorization.

121213031339 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 121213031339 in words is "one hundred twenty-one billion, two hundred thirteen million, thirty-one thousand, three hundred thirty-nine".