121822917 has 16 divisors (see below), whose sum is σ = 165531072. Its totient is φ = 79672320.

The previous prime is 121822903. The next prime is 121822937. The reversal of 121822917 is 719228121.

It is not a de Polignac number, because 121822917 - 2⁶ = 121822853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121822937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99493 + ... + 100709.

It is an arithmetic number, because the mean of its divisors is an integer number (10345692).

Almost surely, 2^121822917 is an apocalyptic number.

It is an amenable number.

121822917 is a deficient number, since it is larger than the sum of its proper divisors (43708155).

121822917 is a wasteful number, since it uses less digits than its factorization.

121822917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828.

The product of its digits is 4032, while the sum is 33.

The square root of 121822917 is about 11037.3419354480. The cubic root of 121822917 is about 495.7274845463.

The spelling of 121822917 in words is "one hundred twenty-one million, eight hundred twenty-two thousand, nine hundred seventeen".