11241221024221 has 4 divisors (see below), whose sum is σ = 11241230773372. Its totient is φ = 11241211275072.

The previous prime is 11241221024183. The next prime is 11241221024269. The reversal of 11241221024221 is 12242012214211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3962767048900 + 7278453975321 = 1990670^2 + 2697861^2 .

It is a cyclic number.

It is not a de Polignac number, because 11241221024221 - 2⁷ = 11241221024093 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 (11241221024921) 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, 2870310 + ... + 5542663.

It is an arithmetic number, because the mean of its divisors is an integer number (2810307693343).

Almost surely, 2^{11241221024221} is an apocalyptic number.

It is an amenable number.

11241221024221 is a deficient number, since it is larger than the sum of its proper divisors (9749151).

11241221024221 is an equidigital number, since it uses as much as digits as its factorization.

11241221024221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9749150.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 11241221024221 its reverse (12242012214211), we get a palindrome (23483233238432).

The spelling of 11241221024221 in words is "eleven trillion, two hundred forty-one billion, two hundred twenty-one million, twenty-four thousand, two hundred twenty-one".