1121100043 has 8 divisors (see below), whose sum is σ = 1305432288. Its totient is φ = 942811584.

The previous prime is 1121099983. The next prime is 1121100083. The reversal of 1121100043 is 3400011211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121100043 - 2²⁵ = 1087545611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121099996 and 1121100032.

It is not an unprimeable number, because it can be changed into a prime (1121100083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1510546 + ... + 1511287.

It is an arithmetic number, because the mean of its divisors is an integer number (163179036).

Almost surely, 2^1121100043 is an apocalyptic number.

1121100043 is a deficient number, since it is larger than the sum of its proper divisors (184332245).

1121100043 is an equidigital number, since it uses as much as digits as its factorization.

1121100043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021893.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1121100043 is about 33482.8320636113. The cubic root of 1121100043 is about 1038.8387071409.

Adding to 1121100043 its reverse (3400011211), we get a palindrome (4521111254).

The spelling of 1121100043 in words is "one billion, one hundred twenty-one million, one hundred thousand, forty-three".