121344281 has 2 divisors, whose sum is σ = 121344282. Its totient is φ = 121344280.

The previous prime is 121344263. The next prime is 121344319. The reversal of 121344281 is 182443121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121110025 + 234256 = 11005^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 121344281 - 2⁶ = 121344217 is a prime.

It is a super-2 number, since 2×121344281² = 29448869062813922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121344281.

It is not a weakly prime, because it can be changed into another prime (121344211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60672140 + 60672141.

It is an arithmetic number, because the mean of its divisors is an integer number (60672141).

Almost surely, 2^121344281 is an apocalyptic number.

It is an amenable number.

121344281 is a deficient number, since it is larger than the sum of its proper divisors (1).

121344281 is an equidigital number, since it uses as much as digits as its factorization.

121344281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

The square root of 121344281 is about 11015.6380205597. The cubic root of 121344281 is about 495.0774031256.

The spelling of 121344281 in words is "one hundred twenty-one million, three hundred forty-four thousand, two hundred eighty-one".