11220111010123 has 4 divisors (see below), whose sum is σ = 11225376198088. Its totient is φ = 11214845822160.

The previous prime is 11220111010103. The next prime is 11220111010177. The reversal of 11220111010123 is 32101011102211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11220111010123 - 2²⁹ = 11219574139211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220111010097 and 11220111010106.

It is not an unprimeable number, because it can be changed into a prime (11220111010103) 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, 2632590786 + ... + 2632595047.

It is an arithmetic number, because the mean of its divisors is an integer number (2806344049522).

Almost surely, 2^{11220111010123} is an apocalyptic number.

11220111010123 is a deficient number, since it is larger than the sum of its proper divisors (5265187965).

11220111010123 is an equidigital number, since it uses as much as digits as its factorization.

11220111010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265187964.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11220111010123 its reverse (32101011102211), we get a palindrome (43321122112334).

The spelling of 11220111010123 in words is "eleven trillion, two hundred twenty billion, one hundred eleven million, ten thousand, one hundred twenty-three".