22111021123 has 4 divisors (see below), whose sum is σ = 22111382160. Its totient is φ = 22110660088.

The previous prime is 22111021073. The next prime is 22111021129. The reversal of 22111021123 is 32112011122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32112011122 = 2 ⋅16056005561.

It is a cyclic number.

It is not a de Polignac number, because 22111021123 - 2²¹ = 22108923971 is a prime.

It is a super-2 number, since 2×22111021123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111021097 and 22111021106.

It is not an unprimeable number, because it can be changed into a prime (22111021129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63268 + ... + 219601.

It is an arithmetic number, because the mean of its divisors is an integer number (5527845540).

Almost surely, 2^22111021123 is an apocalyptic number.

22111021123 is a deficient number, since it is larger than the sum of its proper divisors (361037).

22111021123 is an equidigital number, since it uses as much as digits as its factorization.

22111021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361036.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22111021123 its reverse (32112011122), we get a palindrome (54223032245).

The spelling of 22111021123 in words is "twenty-two billion, one hundred eleven million, twenty-one thousand, one hundred twenty-three".