20112011192 has 96 divisors (see below), whose sum is σ = 47582665200. Its totient is φ = 7898881536.

The previous prime is 20112011189. The next prime is 20112011201. The reversal of 20112011192 is 29111021102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 694148 + ... + 722540.

Almost surely, 2^20112011192 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 20112011192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23791332600).

20112011192 is an abundant number, since it is smaller than the sum of its proper divisors (27470654008).

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

20112011192 is a wasteful number, since it uses less digits than its factorization.

20112011192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28565 (or 28554 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 20112011192 its reverse (29111021102), we get a palindrome (49223032294).

The spelling of 20112011192 in words is "twenty billion, one hundred twelve million, eleven thousand, one hundred ninety-two".