1121142133 has 4 divisors (see below), whose sum is σ = 1122528780. Its totient is φ = 1119755488.

The previous prime is 1121142109. The next prime is 1121142137. The reversal of 1121142133 is 3312411211.

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 658332964 + 462809169 = 25658^2 + 21513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121142133 - 2²⁵ = 1087587701 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 1121142133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121142137) 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, 692110 + ... + 693727.

It is an arithmetic number, because the mean of its divisors is an integer number (280632195).

Almost surely, 2^1121142133 is an apocalyptic number.

It is an amenable number.

1121142133 is a deficient number, since it is larger than the sum of its proper divisors (1386647).

1121142133 is an equidigital number, since it uses as much as digits as its factorization.

1121142133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386646.

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

The square root of 1121142133 is about 33483.4605887743. The cubic root of 1121142133 is about 1038.8517075192.

Adding to 1121142133 its reverse (3312411211), we get a palindrome (4433553344).

The spelling of 1121142133 in words is "one billion, one hundred twenty-one million, one hundred forty-two thousand, one hundred thirty-three".