121250881 has 2 divisors, whose sum is σ = 121250882. Its totient is φ = 121250880.

The previous prime is 121250869. The next prime is 121250893. The reversal of 121250881 is 188052121.

It is a balanced prime because it is at equal distance from previous prime (121250869) and next prime (121250893).

It can be written as a sum of positive squares in only one way, i.e., 100320256 + 20930625 = 10016^2 + 4575^2 .

It is an emirp because it is prime and its reverse (188052121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121250881 - 2¹⁵ = 121218113 is a prime.

It is a super-2 number, since 2×121250881² = 29403552286552322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121257881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60625440 + 60625441.

It is an arithmetic number, because the mean of its divisors is an integer number (60625441).

Almost surely, 2^121250881 is an apocalyptic number.

It is an amenable number.

121250881 is a deficient number, since it is larger than the sum of its proper divisors (1).

121250881 is an equidigital number, since it uses as much as digits as its factorization.

121250881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 121250881 is about 11011.3977768492. The cubic root of 121250881 is about 494.9503483851.

The spelling of 121250881 in words is "one hundred twenty-one million, two hundred fifty thousand, eight hundred eighty-one".