1121043143 has 4 divisors (see below), whose sum is σ = 1222956168. Its totient is φ = 1019130120.

The previous prime is 1121043139. The next prime is 1121043163. The reversal of 1121043143 is 3413401211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3413401211 = 11 ⋅310309201.

It is a cyclic number.

It is not a de Polignac number, because 1121043143 - 2² = 1121043139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121043103) 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, 50956496 + ... + 50956517.

It is an arithmetic number, because the mean of its divisors is an integer number (305739042).

Almost surely, 2^1121043143 is an apocalyptic number.

1121043143 is a deficient number, since it is larger than the sum of its proper divisors (101913025).

1121043143 is a wasteful number, since it uses less digits than its factorization.

1121043143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101913024.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1121043143 is about 33481.9823636534. The cubic root of 1121043143 is about 1038.8211318665.

Adding to 1121043143 its reverse (3413401211), we get a palindrome (4534444354).

The spelling of 1121043143 in words is "one billion, one hundred twenty-one million, forty-three thousand, one hundred forty-three".