11221111023 has 8 divisors (see below), whose sum is σ = 15184787328. Its totient is φ = 7369087704.

The previous prime is 11221111003. The next prime is 11221111037. The reversal of 11221111023 is 32011112211.

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

It is not a de Polignac number, because 11221111023 - 2⁶ = 11221110959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11221110993 and 11221111011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221111003) 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, 27913011 + ... + 27913412.

It is an arithmetic number, because the mean of its divisors is an integer number (1898098416).

Almost surely, 2^11221111023 is an apocalyptic number.

11221111023 is a deficient number, since it is larger than the sum of its proper divisors (3963676305).

11221111023 is an equidigital number, since it uses as much as digits as its factorization.

11221111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55826493.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11221111023 its reverse (32011112211), we get a palindrome (43232223234).

The spelling of 11221111023 in words is "eleven billion, two hundred twenty-one million, one hundred eleven thousand, twenty-three".