121216822 has 8 divisors (see below), whose sum is σ = 181884456. Its totient is φ = 60588672.

The previous prime is 121216811. The next prime is 121216853. The reversal of 121216822 is 228612121.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363 + ... + 15574.

It is an arithmetic number, because the mean of its divisors is an integer number (22735557).

Almost surely, 2^121216822 is an apocalyptic number.

121216822 is a deficient number, since it is larger than the sum of its proper divisors (60667634).

121216822 is a wasteful number, since it uses less digits than its factorization.

121216822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19742.

The product of its digits is 768, while the sum is 25.

The square root of 121216822 is about 11009.8511343251. The cubic root of 121216822 is about 494.9040007011.

Adding to 121216822 its reverse (228612121), we get a palindrome (349828943).

The spelling of 121216822 in words is "one hundred twenty-one million, two hundred sixteen thousand, eight hundred twenty-two".