121422281 has 2 divisors, whose sum is σ = 121422282. Its totient is φ = 121422280.

The previous prime is 121422253. The next prime is 121422341. The reversal of 121422281 is 182224121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100801600 + 20620681 = 10040^2 + 4541^2 .

It is a cyclic number.

It is not a de Polignac number, because 121422281 - 2¹⁴ = 121405897 is a prime.

It is a super-2 number, since 2×121422281² = 29486740646485922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121422241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60711140 + 60711141.

It is an arithmetic number, because the mean of its divisors is an integer number (60711141).

Almost surely, 2^121422281 is an apocalyptic number.

It is an amenable number.

121422281 is a deficient number, since it is larger than the sum of its proper divisors (1).

121422281 is an equidigital number, since it uses as much as digits as its factorization.

121422281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 23.

The square root of 121422281 is about 11019.1778731446. The cubic root of 121422281 is about 495.1834588484.

The spelling of 121422281 in words is "one hundred twenty-one million, four hundred twenty-two thousand, two hundred eighty-one".