121224131 has 8 divisors (see below), whose sum is σ = 139372800. Its totient is φ = 103283208.

The previous prime is 121224113. The next prime is 121224133. The reversal of 121224131 is 131422121.

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

It is not a de Polignac number, because 121224131 - 2⁶ = 121224067 is a prime.

It is a super-2 number, since 2×121224131² = 29390579873410322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121224133) 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 7 ways as a sum of consecutive naturals, for example, 50681 + ... + 53018.

It is an arithmetic number, because the mean of its divisors is an integer number (17421600).

Almost surely, 2^121224131 is an apocalyptic number.

121224131 is a deficient number, since it is larger than the sum of its proper divisors (18148669).

121224131 is a wasteful number, since it uses less digits than its factorization.

121224131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103873.

The product of its digits is 96, while the sum is 17.

The square root of 121224131 is about 11010.1830593319. The cubic root of 121224131 is about 494.9139475621.

Adding to 121224131 its reverse (131422121), we get a palindrome (252646252).

The spelling of 121224131 in words is "one hundred twenty-one million, two hundred twenty-four thousand, one hundred thirty-one".