2233541221 has 4 divisors (see below), whose sum is σ = 2233954944. Its totient is φ = 2233127500.

The previous prime is 2233541179. The next prime is 2233541231. The reversal of 2233541221 is 1221453322.

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: 1221453322 = 2 ⋅610726661.

It is a cyclic number.

It is not a de Polignac number, because 2233541221 - 2¹¹ = 2233539173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2233541231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198655 + ... + 209596.

It is an arithmetic number, because the mean of its divisors is an integer number (558488736).

Almost surely, 2^2233541221 is an apocalyptic number.

It is an amenable number.

2233541221 is a deficient number, since it is larger than the sum of its proper divisors (413723).

2233541221 is an equidigital number, since it uses as much as digits as its factorization.

2233541221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413722.

The product of its digits is 2880, while the sum is 25.

The square root of 2233541221 is about 47260.3557011582. The cubic root of 2233541221 is about 1307.1677483123.

Adding to 2233541221 its reverse (1221453322), we get a palindrome (3454994543).

The spelling of 2233541221 in words is "two billion, two hundred thirty-three million, five hundred forty-one thousand, two hundred twenty-one".