11123220434 has 4 divisors (see below), whose sum is σ = 16684830654. Its totient is φ = 5561610216.

The previous prime is 11123220431. The next prime is 11123220439. The reversal of 11123220434 is 43402232111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11063884225 + 59336209 = 105185^2 + 7703^2 .

It is not an unprimeable number, because it can be changed into a prime (11123220431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780805107 + ... + 2780805110.

Almost surely, 2^11123220434 is an apocalyptic number.

11123220434 is a deficient number, since it is larger than the sum of its proper divisors (5561610220).

11123220434 is an equidigital number, since it uses as much as digits as its factorization.

11123220434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561610219.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 11123220434 its reverse (43402232111), we get a palindrome (54525452545).

The spelling of 11123220434 in words is "eleven billion, one hundred twenty-three million, two hundred twenty thousand, four hundred thirty-four".