121013328912869 has 2 divisors, whose sum is σ = 121013328912870. Its totient is φ = 121013328912868.

The previous prime is 121013328912803. The next prime is 121013328912877. The reversal of 121013328912869 is 968219823310121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115067349033025 + 5945979879844 = 10726945^2 + 2438438^2 .

It is an emirp because it is prime and its reverse (968219823310121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121013328912869 - 2⁸ = 121013328912613 is a prime.

It is a super-2 number, since 2×121013328912869² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121013328912899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506664456434 + 60506664456435.

It is an arithmetic number, because the mean of its divisors is an integer number (60506664456435).

Almost surely, 2^{121013328912869} is an apocalyptic number.

It is an amenable number.

121013328912869 is a deficient number, since it is larger than the sum of its proper divisors (1).

121013328912869 is an equidigital number, since it uses as much as digits as its factorization.

121013328912869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 121013328912869 in words is "one hundred twenty-one trillion, thirteen billion, three hundred twenty-eight million, nine hundred twelve thousand, eight hundred sixty-nine".