121883365819 has 2 divisors, whose sum is σ = 121883365820. Its totient is φ = 121883365818.

The previous prime is 121883365811. The next prime is 121883365859. The reversal of 121883365819 is 918563388121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121883365819 - 2³ = 121883365811 is a prime.

It is a super-2 number, since 2×121883365819² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121883365819.

It is not a weakly prime, because it can be changed into another prime (121883365811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60941682909 + 60941682910.

It is an arithmetic number, because the mean of its divisors is an integer number (60941682910).

Almost surely, 2^121883365819 is an apocalyptic number.

121883365819 is a deficient number, since it is larger than the sum of its proper divisors (1).

121883365819 is an equidigital number, since it uses as much as digits as its factorization.

121883365819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 55.

The spelling of 121883365819 in words is "one hundred twenty-one billion, eight hundred eighty-three million, three hundred sixty-five thousand, eight hundred nineteen".