1121224241 has 4 divisors (see below), whose sum is σ = 1122533412. Its totient is φ = 1119915072.

The previous prime is 1121224231. The next prime is 1121224267. The reversal of 1121224241 is 1424221211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 896104225 + 225120016 = 29935^2 + 15004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121224241 - 2¹⁸ = 1120962097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121224211) 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, 653300 + ... + 655013.

It is an arithmetic number, because the mean of its divisors is an integer number (280633353).

Almost surely, 2^1121224241 is an apocalyptic number.

It is an amenable number.

1121224241 is a deficient number, since it is larger than the sum of its proper divisors (1309171).

1121224241 is an equidigital number, since it uses as much as digits as its factorization.

1121224241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309170.

The product of its digits is 256, while the sum is 20.

The square root of 1121224241 is about 33484.6866642052. The cubic root of 1121224241 is about 1038.8770673587.

Adding to 1121224241 its reverse (1424221211), we get a palindrome (2545445452).

It can be divided in two parts, 11212 and 24241, that added together give a palindrome (35453).

The spelling of 1121224241 in words is "one billion, one hundred twenty-one million, two hundred twenty-four thousand, two hundred forty-one".