768224121 has 16 divisors (see below), whose sum is σ = 1171273728. Its totient is φ = 438742800.

The previous prime is 768224117. The next prime is 768224129. The reversal of 768224121 is 121422867.

It is not a de Polignac number, because 768224121 - 2² = 768224117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (768224129) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 33136 + ... + 51326.

It is an arithmetic number, because the mean of its divisors is an integer number (73204608).

Almost surely, 2^768224121 is an apocalyptic number.

It is an amenable number.

768224121 is a deficient number, since it is larger than the sum of its proper divisors (403049607).

768224121 is a wasteful number, since it uses less digits than its factorization.

768224121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20212.

The product of its digits is 10752, while the sum is 33.

The square root of 768224121 is about 27716.8562611275. The cubic root of 768224121 is about 915.8604668026.

Adding to 768224121 its reverse (121422867), we get a palindrome (889646988).

The spelling of 768224121 in words is "seven hundred sixty-eight million, two hundred twenty-four thousand, one hundred twenty-one".