121939701883 has 4 divisors (see below), whose sum is σ = 121940512720. Its totient is φ = 121938891048.

The previous prime is 121939701859. The next prime is 121939701899. The reversal of 121939701883 is 388107939121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121939701883 - 2¹⁷ = 121939570811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121939701883.

It is not an unprimeable number, because it can be changed into a prime (121939701283) 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 in 3 ways as a sum of consecutive naturals, for example, 106248 + ... + 505141.

It is an arithmetic number, because the mean of its divisors is an integer number (30485128180).

Almost surely, 2^121939701883 is an apocalyptic number.

121939701883 is a deficient number, since it is larger than the sum of its proper divisors (810837).

121939701883 is an equidigital number, since it uses as much as digits as its factorization.

121939701883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810836.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 121939701883 in words is "one hundred twenty-one billion, nine hundred thirty-nine million, seven hundred one thousand, eight hundred eighty-three".