121068281 has 4 divisors (see below), whose sum is σ = 121331364. Its totient is φ = 120805200.

The previous prime is 121068229. The next prime is 121068307. The reversal of 121068281 is 182860121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20748025 + 100320256 = 4555^2 + 10016^2 .

It is a cyclic number.

It is not a de Polignac number, because 121068281 - 2¹⁸ = 120806137 is a prime.

It is a super-2 number, since 2×121068281² = 29315057328589922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121065281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130850 + ... + 131771.

It is an arithmetic number, because the mean of its divisors is an integer number (30332841).

Almost surely, 2^121068281 is an apocalyptic number.

It is an amenable number.

121068281 is a deficient number, since it is larger than the sum of its proper divisors (263083).

121068281 is an equidigital number, since it uses as much as digits as its factorization.

121068281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263082.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 121068281 is about 11003.1032440853. The cubic root of 121068281 is about 494.7017636885.

The spelling of 121068281 in words is "one hundred twenty-one million, sixty-eight thousand, two hundred eighty-one".