20111322112192 has 112 divisors (see below), whose sum is σ = 42393836350080. Its totient is φ = 9433320652800.

The previous prime is 20111322112159. The next prime is 20111322112223. The reversal of 20111322112192 is 29121122311102.

It is a self number, because there is not a number n which added to its sum of digits gives 20111322112192.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423185392 + ... + 423232912.

Almost surely, 2^{20111322112192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111322112192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21196918175040).

20111322112192 is an abundant number, since it is smaller than the sum of its proper divisors (22282514237888).

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

20111322112192 is a wasteful number, since it uses less digits than its factorization.

20111322112192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48810 (or 48800 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 20111322112192 its reverse (29121122311102), we get a palindrome (49232444423294).

The spelling of 20111322112192 in words is "twenty trillion, one hundred eleven billion, three hundred twenty-two million, one hundred twelve thousand, one hundred ninety-two".