12202281 has 48 divisors (see below), whose sum is σ = 22224384. Its totient is φ = 6279552.

The previous prime is 12202279. The next prime is 12202291. The reversal of 12202281 is 18220221.

It is a happy number.

It is not a de Polignac number, because 12202281 - 2¹ = 12202279 is a prime.

It is a super-2 number, since 2×12202281² = 297791323205922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12202271) 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 in 47 ways as a sum of consecutive naturals, for example, 38335 + ... + 38651.

It is an arithmetic number, because the mean of its divisors is an integer number (463008).

Almost surely, 2^12202281 is an apocalyptic number.

It is an amenable number.

12202281 is a deficient number, since it is larger than the sum of its proper divisors (10022103).

12202281 is a wasteful number, since it uses less digits than its factorization.

12202281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 12202281 is about 3493.1763482538. The cubic root of 12202281 is about 230.2220980029. Note that the first 3 decimals are identical.

The spelling of 12202281 in words is "twelve million, two hundred two thousand, two hundred eighty-one".