1141331221 has 8 divisors (see below), whose sum is σ = 1205809920. Its totient is φ = 1078527408.

The previous prime is 1141331207. The next prime is 1141331239. The reversal of 1141331221 is 1221331411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1141331221 - 2⁵ = 1141331189 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 (1141331251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417321 + ... + 420046.

It is an arithmetic number, because the mean of its divisors is an integer number (150726240).

Almost surely, 2^1141331221 is an apocalyptic number.

It is an amenable number.

1141331221 is a deficient number, since it is larger than the sum of its proper divisors (64478699).

1141331221 is an equidigital number, since it uses as much as digits as its factorization.

1141331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837443.

The product of its digits is 144, while the sum is 19.

The square root of 1141331221 is about 33783.5939621586. The cubic root of 1141331221 is about 1045.0503920206.

Adding to 1141331221 its reverse (1221331411), we get a palindrome (2362662632).

The spelling of 1141331221 in words is "one billion, one hundred forty-one million, three hundred thirty-one thousand, two hundred twenty-one".