121222281 has 8 divisors (see below), whose sum is σ = 165572064. Its totient is φ = 78843680.

The previous prime is 121222273. The next prime is 121222331. The reversal of 121222281 is 182222121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121222281 - 2³ = 121222273 is a prime.

It is a super-2 number, since 2×121222281² = 29389682821685922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121222481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492651 + ... + 492896.

It is an arithmetic number, because the mean of its divisors is an integer number (20696508).

Almost surely, 2^121222281 is an apocalyptic number.

It is an amenable number.

121222281 is a deficient number, since it is larger than the sum of its proper divisors (44349783).

121222281 is an equidigital number, since it uses as much as digits as its factorization.

121222281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985591.

The product of its digits is 256, while the sum is 21.

The square root of 121222281 is about 11010.0990458760. The cubic root of 121222281 is about 494.9114299240.

The spelling of 121222281 in words is "one hundred twenty-one million, two hundred twenty-two thousand, two hundred eighty-one".