1141203221 has 4 divisors (see below), whose sum is σ = 1142422092. Its totient is φ = 1139984352.

The previous prime is 1141203199. The next prime is 1141203227. The reversal of 1141203221 is 1223021411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74200996 + 1067002225 = 8614^2 + 32665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1141203221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1141203221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141203227) 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, 608030 + ... + 609903.

It is an arithmetic number, because the mean of its divisors is an integer number (285605523).

Almost surely, 2^1141203221 is an apocalyptic number.

It is an amenable number.

1141203221 is a deficient number, since it is larger than the sum of its proper divisors (1218871).

1141203221 is an equidigital number, since it uses as much as digits as its factorization.

1141203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218870.

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

The square root of 1141203221 is about 33781.6994983971. The cubic root of 1141203221 is about 1045.0113231834.

Adding to 1141203221 its reverse (1223021411), we get a palindrome (2364224632).

The spelling of 1141203221 in words is "one billion, one hundred forty-one million, two hundred three thousand, two hundred twenty-one".