121352599799 has 2 divisors, whose sum is σ = 121352599800. Its totient is φ = 121352599798.

The previous prime is 121352599733. The next prime is 121352599847. The reversal of 121352599799 is 997995253121.

It is a strong prime.

It is an emirp because it is prime and its reverse (997995253121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121352599799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121352599399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60676299899 + 60676299900.

It is an arithmetic number, because the mean of its divisors is an integer number (60676299900).

Almost surely, 2^121352599799 is an apocalyptic number.

121352599799 is a deficient number, since it is larger than the sum of its proper divisors (1).

121352599799 is an equidigital number, since it uses as much as digits as its factorization.

121352599799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13778100, while the sum is 62.

The spelling of 121352599799 in words is "one hundred twenty-one billion, three hundred fifty-two million, five hundred ninety-nine thousand, seven hundred ninety-nine".