121131224 has 16 divisors (see below), whose sum is σ = 227669400. Its totient is φ = 60419392.

The previous prime is 121131223. The next prime is 121131281. The reversal of 121131224 is 422131121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14717 + ... + 21420.

Almost surely, 2^121131224 is an apocalyptic number.

It is an amenable number.

121131224 is a deficient number, since it is larger than the sum of its proper divisors (106538176).

121131224 is a wasteful number, since it uses less digits than its factorization.

121131224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36562 (or 36558 counting only the distinct ones).

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

The square root of 121131224 is about 11005.9631109685. The cubic root of 121131224 is about 494.7874801075.

Adding to 121131224 its reverse (422131121), we get a palindrome (543262345).

The spelling of 121131224 in words is "one hundred twenty-one million, one hundred thirty-one thousand, two hundred twenty-four".