20101011112 has 128 divisors (see below), whose sum is σ = 47155530240. Its totient is φ = 7821388800.

The previous prime is 20101011109. The next prime is 20101011113. The reversal of 20101011112 is 21111010102.

It is not an unprimeable number, because it can be changed into a prime (20101011113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12278358 + ... + 12279994.

It is an arithmetic number, because the mean of its divisors is an integer number (368402580).

Almost surely, 2^20101011112 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 20101011112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23577765120).

20101011112 is an abundant number, since it is smaller than the sum of its proper divisors (27054519128).

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

20101011112 is a wasteful number, since it uses less digits than its factorization.

20101011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1927 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20101011112 its reverse (21111010102), we get a palindrome (41212021214).

The spelling of 20101011112 in words is "twenty billion, one hundred one million, eleven thousand, one hundred twelve".