22221211123 has 8 divisors (see below), whose sum is σ = 22674985200. Its totient is φ = 21770008608.

The previous prime is 22221211079. The next prime is 22221211157. The reversal of 22221211123 is 32111212222.

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

It is a cyclic number.

It is not a de Polignac number, because 22221211123 - 2²¹ = 22219113971 is a prime.

It is a super-2 number, since 2×22221211123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221211123.

It is not an unprimeable number, because it can be changed into a prime (22221211163) 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, 625428 + ... + 660001.

It is an arithmetic number, because the mean of its divisors is an integer number (2834373150).

Almost surely, 2^22221211123 is an apocalyptic number.

22221211123 is a deficient number, since it is larger than the sum of its proper divisors (453774077).

22221211123 is a wasteful number, since it uses less digits than its factorization.

22221211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285781.

The product of its digits is 192, while the sum is 19.

Adding to 22221211123 its reverse (32111212222), we get a palindrome (54332423345).

The spelling of 22221211123 in words is "twenty-two billion, two hundred twenty-one million, two hundred eleven thousand, one hundred twenty-three".