1133221123 has 4 divisors (see below), whose sum is σ = 1192864360. Its totient is φ = 1073577888.

The previous prime is 1133221093. The next prime is 1133221153. The reversal of 1133221123 is 3211223311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211223311 = 331 ⋅9701581.

It is an interprime number because it is at equal distance from previous prime (1133221093) and next prime (1133221153).

It is a cyclic number.

It is not a de Polignac number, because 1133221123 - 2⁵ = 1133221091 is a prime.

It is a super-2 number, since 2×1133221123² = 2568380227226762258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 59643217 = 1133221123 / (1 + 1 + 3 + 3 + 2 + 2 + 1 + 1 + 2 + 3).

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 1133221123.

It is not an unprimeable number, because it can be changed into a prime (1133221153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29821590 + ... + 29821627.

It is an arithmetic number, because the mean of its divisors is an integer number (298216090).

Almost surely, 2^1133221123 is an apocalyptic number.

1133221123 is a deficient number, since it is larger than the sum of its proper divisors (59643237).

1133221123 is an equidigital number, since it uses as much as digits as its factorization.

1133221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59643236.

The product of its digits is 216, while the sum is 19.

The square root of 1133221123 is about 33663.3498481657. The cubic root of 1133221123 is about 1042.5691912356.

Adding to 1133221123 its reverse (3211223311), we get a palindrome (4344444434).

The spelling of 1133221123 in words is "one billion, one hundred thirty-three million, two hundred twenty-one thousand, one hundred twenty-three".