1133320121 has 4 divisors (see below), whose sum is σ = 1133690100. Its totient is φ = 1132950144.

The previous prime is 1133320061. The next prime is 1133320129. The reversal of 1133320121 is 1210233311.

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 1045616896 + 87703225 = 32336^2 + 9365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133320121 - 2¹⁴ = 1133303737 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 1133320121.

It is not an unprimeable number, because it can be changed into a prime (1133320129) 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, 180356 + ... + 186533.

It is an arithmetic number, because the mean of its divisors is an integer number (283422525).

Almost surely, 2^1133320121 is an apocalyptic number.

It is an amenable number.

1133320121 is a deficient number, since it is larger than the sum of its proper divisors (369979).

1133320121 is an equidigital number, since it uses as much as digits as its factorization.

1133320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369978.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1133320121 is about 33664.8202282442. The cubic root of 1133320121 is about 1042.5995499059.

Adding to 1133320121 its reverse (1210233311), we get a palindrome (2343553432).

The spelling of 1133320121 in words is "one billion, one hundred thirty-three million, three hundred twenty thousand, one hundred twenty-one".