11141131221 has 12 divisors (see below), whose sum is σ = 17555722080. Its totient is φ = 6752200680.

The previous prime is 11141131201. The next prime is 11141131241. The reversal of 11141131221 is 12213114111.

11141131221 is a `hidden beast` number, since 1 + 1 + 1 + 411 + 31 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (11141131201) and next prime (11141131241).

It is not a de Polignac number, because 11141131221 - 2⁷ = 11141131093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11141131194 and 11141131203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11141131201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56268241 + ... + 56268438.

It is an arithmetic number, because the mean of its divisors is an integer number (1462976840).

Almost surely, 2^11141131221 is an apocalyptic number.

11141131221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11141131221 is a deficient number, since it is larger than the sum of its proper divisors (6414590859).

11141131221 is a wasteful number, since it uses less digits than its factorization.

11141131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112536696 (or 112536693 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 11141131221 its reverse (12213114111), we get a palindrome (23354245332).

The spelling of 11141131221 in words is "eleven billion, one hundred forty-one million, one hundred thirty-one thousand, two hundred twenty-one".