11220055123 has 4 divisors (see below), whose sum is σ = 11810584360. Its totient is φ = 10629525888.

The previous prime is 11220055117. The next prime is 11220055129. The reversal of 11220055123 is 32155002211.

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

It is an interprime number because it is at equal distance from previous prime (11220055117) and next prime (11220055129).

It is a cyclic number.

It is not a de Polignac number, because 11220055123 - 2¹³ = 11220046931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220055094 and 11220055103.

It is not an unprimeable number, because it can be changed into a prime (11220055129) 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, 295264590 + ... + 295264627.

It is an arithmetic number, because the mean of its divisors is an integer number (2952646090).

Almost surely, 2^11220055123 is an apocalyptic number.

11220055123 is a deficient number, since it is larger than the sum of its proper divisors (590529237).

11220055123 is an equidigital number, since it uses as much as digits as its factorization.

11220055123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590529236.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 11220055123 its reverse (32155002211), we get a palindrome (43375057334).

The spelling of 11220055123 in words is "eleven billion, two hundred twenty million, fifty-five thousand, one hundred twenty-three".