20111222211104 has 48 divisors (see below), whose sum is σ = 40916059462656. Its totient is φ = 9720554188800.

The previous prime is 20111222211007. The next prime is 20111222211109. The reversal of 20111222211104 is 40111222211102.

It is a super-2 number, since 2×20111222211104² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20111222211109) 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, 10223297 + ... + 12030720.

It is an arithmetic number, because the mean of its divisors is an integer number (852417905472).

Almost surely, 2^{20111222211104} is an apocalyptic number.

It is an amenable number.

20111222211104 is an abundant number, since it is smaller than the sum of its proper divisors (20804837251552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111222211104 is a wasteful number, since it uses less digits than its factorization.

20111222211104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22254969 (or 22254961 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 20111222211104 its reverse (40111222211102), we get a palindrome (60222444422206).

The spelling of 20111222211104 in words is "twenty trillion, one hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand, one hundred four".