1133121243 has 8 divisors (see below), whose sum is σ = 1576516608. Its totient is φ = 722570024.

The previous prime is 1133121239. The next prime is 1133121271. The reversal of 1133121243 is 3421213311.

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

It is not a de Polignac number, because 1133121243 - 2² = 1133121239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1133121293) 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, 8210955 + ... + 8211092.

It is an arithmetic number, because the mean of its divisors is an integer number (197064576).

Almost surely, 2^1133121243 is an apocalyptic number.

1133121243 is a deficient number, since it is larger than the sum of its proper divisors (443395365).

1133121243 is a wasteful number, since it uses less digits than its factorization.

1133121243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16422073.

The product of its digits is 432, while the sum is 21.

The square root of 1133121243 is about 33661.8663029844. The cubic root of 1133121243 is about 1042.5385602999.

Adding to 1133121243 its reverse (3421213311), we get a palindrome (4554334554).

The spelling of 1133121243 in words is "one billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred forty-three".