121224263 has 24 divisors (see below), whose sum is σ = 136085040. Its totient is φ = 107573760.

The previous prime is 121224251. The next prime is 121224289. The reversal of 121224263 is 362422121.

It is a happy number.

It is not a de Polignac number, because 121224263 - 2¹⁰ = 121223239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121224223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 872048 + ... + 872186.

It is an arithmetic number, because the mean of its divisors is an integer number (5670210).

Almost surely, 2^121224263 is an apocalyptic number.

121224263 is a deficient number, since it is larger than the sum of its proper divisors (14860777).

121224263 is a wasteful number, since it uses less digits than its factorization.

121224263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 246 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 121224263 is about 11010.1890537810. The cubic root of 121224263 is about 494.9141271980.

Adding to 121224263 its reverse (362422121), we get a palindrome (483646384).

The spelling of 121224263 in words is "one hundred twenty-one million, two hundred twenty-four thousand, two hundred sixty-three".