1103220043 has 4 divisors (see below), whose sum is σ = 1110526288. Its totient is φ = 1095913800.

The previous prime is 1103220031. The next prime is 1103220077. The reversal of 1103220043 is 3400223011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3400223011 = 211 ⋅16114801.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103220043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103219999 and 1103220026.

It is not an unprimeable number, because it can be changed into a prime (1103221043) 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, 3652896 + ... + 3653197.

It is an arithmetic number, because the mean of its divisors is an integer number (277631572).

Almost surely, 2^1103220043 is an apocalyptic number.

1103220043 is a deficient number, since it is larger than the sum of its proper divisors (7306245).

1103220043 is an equidigital number, since it uses as much as digits as its factorization.

1103220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7306244.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1103220043 is about 33214.7564043453. The cubic root of 1103220043 is about 1033.2864027825.

Adding to 1103220043 its reverse (3400223011), we get a palindrome (4503443054).

The spelling of 1103220043 in words is "one billion, one hundred three million, two hundred twenty thousand, forty-three".