1141230221 has 4 divisors (see below), whose sum is σ = 1151896032. Its totient is φ = 1130564412.

The previous prime is 1141230217. The next prime is 1141230283. The reversal of 1141230221 is 1220321411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1141230221 - 2² = 1141230217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1141230221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141233221) 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, 5332745 + ... + 5332958.

It is an arithmetic number, because the mean of its divisors is an integer number (287974008).

Almost surely, 2^1141230221 is an apocalyptic number.

It is an amenable number.

1141230221 is a deficient number, since it is larger than the sum of its proper divisors (10665811).

1141230221 is a wasteful number, since it uses less digits than its factorization.

1141230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665810.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1141230221 is about 33782.0991206882. The cubic root of 1141230221 is about 1045.0195645094.

Adding to 1141230221 its reverse (1220321411), we get a palindrome (2361551632).

The spelling of 1141230221 in words is "one billion, one hundred forty-one million, two hundred thirty thousand, two hundred twenty-one".