1121120543 has 2 divisors, whose sum is σ = 1121120544. Its totient is φ = 1121120542.

The previous prime is 1121120527. The next prime is 1121120603. The reversal of 1121120543 is 3450211211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121120543 - 2⁴ = 1121120527 is a prime.

It is a super-2 number, since 2×1121120543² = 2513822543873229698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121120443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560560271 + 560560272.

It is an arithmetic number, because the mean of its divisors is an integer number (560560272).

Almost surely, 2^1121120543 is an apocalyptic number.

1121120543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121120543 is an equidigital number, since it uses as much as digits as its factorization.

1121120543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1121120543 is about 33483.1381892439. The cubic root of 1121120543 is about 1038.8450390360.

Adding to 1121120543 its reverse (3450211211), we get a palindrome (4571331754).

The spelling of 1121120543 in words is "one billion, one hundred twenty-one million, one hundred twenty thousand, five hundred forty-three".