121280012881 has 2 divisors, whose sum is σ = 121280012882. Its totient is φ = 121280012880.

The previous prime is 121280012831. The next prime is 121280012927. The reversal of 121280012881 is 188210082121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107547923025 + 13732089856 = 327945^2 + 117184^2 .

It is an emirp because it is prime and its reverse (188210082121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121280012881 - 2⁷ = 121280012753 is a prime.

It is a super-2 number, since 2×121280012881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121280012801) 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, 60640006440 + 60640006441.

It is an arithmetic number, because the mean of its divisors is an integer number (60640006441).

Almost surely, 2^121280012881 is an apocalyptic number.

It is an amenable number.

121280012881 is a deficient number, since it is larger than the sum of its proper divisors (1).

121280012881 is an equidigital number, since it uses as much as digits as its factorization.

121280012881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 34.

The spelling of 121280012881 in words is "one hundred twenty-one billion, two hundred eighty million, twelve thousand, eight hundred eighty-one".