121313203147 has 2 divisors, whose sum is σ = 121313203148. Its totient is φ = 121313203146.

The previous prime is 121313203069. The next prime is 121313203153. The reversal of 121313203147 is 741302313121.

It is a strong prime.

It is an emirp because it is prime and its reverse (741302313121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121313203147 is a prime.

It is not a weakly prime, because it can be changed into another prime (121313204147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60656601573 + 60656601574.

It is an arithmetic number, because the mean of its divisors is an integer number (60656601574).

Almost surely, 2^121313203147 is an apocalyptic number.

121313203147 is a deficient number, since it is larger than the sum of its proper divisors (1).

121313203147 is an equidigital number, since it uses as much as digits as its factorization.

121313203147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 121313203147 its reverse (741302313121), we get a palindrome (862615516268).

The spelling of 121313203147 in words is "one hundred twenty-one billion, three hundred thirteen million, two hundred three thousand, one hundred forty-seven".