121822281 has 96 divisors (see below), whose sum is σ = 226304000. Its totient is φ = 62868960.

The previous prime is 121822273. The next prime is 121822291. The reversal of 121822281 is 182228121.

It is not a de Polignac number, because 121822281 - 2³ = 121822273 is a prime.

It is a super-2 number, since 2×121822281² = 29681336296085922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121822201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1818210 + ... + 1818276.

Almost surely, 2^121822281 is an apocalyptic number.

It is an amenable number.

121822281 is a deficient number, since it is larger than the sum of its proper divisors (104481719).

121822281 is a wasteful number, since it uses less digits than its factorization.

121822281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 127 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 121822281 is about 11037.3131241258. The cubic root of 121822281 is about 495.7266218645.

The spelling of 121822281 in words is "one hundred twenty-one million, eight hundred twenty-two thousand, two hundred eighty-one".