224022121 has 4 divisors (see below), whose sum is σ = 224557200. Its totient is φ = 223487044.

The previous prime is 224022101. The next prime is 224022133. The reversal of 224022121 is 121220422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121220422 = 2 ⋅60610211.

It is a cyclic number.

It is not a de Polignac number, because 224022121 - 2¹¹ = 224020073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224022095 and 224022104.

It is not an unprimeable number, because it can be changed into a prime (224022101) 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, 266911 + ... + 267748.

It is an arithmetic number, because the mean of its divisors is an integer number (56139300).

Almost surely, 2^224022121 is an apocalyptic number.

It is an amenable number.

224022121 is a deficient number, since it is larger than the sum of its proper divisors (535079).

224022121 is an equidigital number, since it uses as much as digits as its factorization.

224022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535078.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 224022121 is about 14967.3685395931. The cubic root of 224022121 is about 607.3377854982.

Adding to 224022121 its reverse (121220422), we get a palindrome (345242543).

The spelling of 224022121 in words is "two hundred twenty-four million, twenty-two thousand, one hundred twenty-one".