121022281 has 2 divisors, whose sum is σ = 121022282. Its totient is φ = 121022280.

The previous prime is 121022273. The next prime is 121022311. The reversal of 121022281 is 182220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119159056 + 1863225 = 10916^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022281 - 2³ = 121022273 is a prime.

It is a super-2 number, since 2×121022281² = 29292784996885922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511140 + 60511141.

It is an arithmetic number, because the mean of its divisors is an integer number (60511141).

Almost surely, 2^121022281 is an apocalyptic number.

It is an amenable number.

121022281 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022281 is an equidigital number, since it uses as much as digits as its factorization.

121022281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 121022281 is about 11001.0127261084. The cubic root of 121022281 is about 494.6391016281.

The spelling of 121022281 in words is "one hundred twenty-one million, twenty-two thousand, two hundred eighty-one".