2541331221 has 16 divisors (see below), whose sum is σ = 3980827200. Its totient is φ = 1421723520.

The previous prime is 2541331217. The next prime is 2541331253. The reversal of 2541331221 is 1221331452.

It is not a de Polignac number, because 2541331221 - 2² = 2541331217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2541331191 and 2541331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541331271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2961496 + ... + 2962353.

It is an arithmetic number, because the mean of its divisors is an integer number (248801700).

Almost surely, 2^2541331221 is an apocalyptic number.

It is an amenable number.

2541331221 is a deficient number, since it is larger than the sum of its proper divisors (1439495979).

2541331221 is a wasteful number, since it uses less digits than its factorization.

2541331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923876.

The product of its digits is 1440, while the sum is 24.

The square root of 2541331221 is about 50411.6179169048. The cubic root of 2541331221 is about 1364.6473116363.

Adding to 2541331221 its reverse (1221331452), we get a palindrome (3762662673).

The spelling of 2541331221 in words is "two billion, five hundred forty-one million, three hundred thirty-one thousand, two hundred twenty-one".