1133141221 has 4 divisors (see below), whose sum is σ = 1134542700. Its totient is φ = 1131739744.

The previous prime is 1133141201. The next prime is 1133141263. The reversal of 1133141221 is 1221413311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1221413311 = 2113 ⋅578047.

It can be written as a sum of positive squares in 2 ways, for example, as 914397121 + 218744100 = 30239^2 + 14790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133141221 - 2¹¹ = 1133139173 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 (1133141201) 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, 699526 + ... + 701143.

It is an arithmetic number, because the mean of its divisors is an integer number (283635675).

Almost surely, 2^1133141221 is an apocalyptic number.

It is an amenable number.

1133141221 is a deficient number, since it is larger than the sum of its proper divisors (1401479).

1133141221 is an equidigital number, since it uses as much as digits as its factorization.

1133141221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401478.

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

The square root of 1133141221 is about 33662.1630469582. The cubic root of 1133141221 is about 1042.5446872444.

Adding to 1133141221 its reverse (1221413311), we get a palindrome (2354554532).

The spelling of 1133141221 in words is "one billion, one hundred thirty-three million, one hundred forty-one thousand, two hundred twenty-one".