1133333121 has 4 divisors (see below), whose sum is σ = 1511110832. Its totient is φ = 755555412.

The previous prime is 1133333099. The next prime is 1133333143. The reversal of 1133333121 is 1213333311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1213333311 = 3 ⋅404444437.

It is an interprime number because it is at equal distance from previous prime (1133333099) and next prime (1133333143).

It is not a de Polignac number, because 1133333121 - 2⁹ = 1133332609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133333171) 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, 188888851 + ... + 188888856.

It is an arithmetic number, because the mean of its divisors is an integer number (377777708).

Almost surely, 2^1133333121 is an apocalyptic number.

It is an amenable number.

1133333121 is a deficient number, since it is larger than the sum of its proper divisors (377777711).

1133333121 is an equidigital number, since it uses as much as digits as its factorization.

1133333121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377777710.

The product of its digits is 486, while the sum is 21.

The square root of 1133333121 is about 33665.0133075869. The cubic root of 1133333121 is about 1042.6035363472.

Adding to 1133333121 its reverse (1213333311), we get a palindrome (2346666432).

The spelling of 1133333121 in words is "one billion, one hundred thirty-three million, three hundred thirty-three thousand, one hundred twenty-one".