224152121 has 8 divisors (see below), whose sum is σ = 228549000. Its totient is φ = 219791232.

The previous prime is 224152109. The next prime is 224152127. The reversal of 224152121 is 121251422.

224152121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33408400 + 190743721 = 5780^2 + 13811^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 224152121 - 2¹⁰ = 224151097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224152093 and 224152102.

It is not an unprimeable number, because it can be changed into a prime (224152127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3755 + ... + 21503.

It is an arithmetic number, because the mean of its divisors is an integer number (28568625).

Almost surely, 2^224152121 is an apocalyptic number.

It is an amenable number.

224152121 is a deficient number, since it is larger than the sum of its proper divisors (4396879).

224152121 is a wasteful number, since it uses less digits than its factorization.

224152121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17995.

The product of its digits is 320, while the sum is 20.

The square root of 224152121 is about 14971.7106904989. The cubic root of 224152121 is about 607.4552421202.

The spelling of 224152121 in words is "two hundred twenty-four million, one hundred fifty-two thousand, one hundred twenty-one".