11101011012 has 192 divisors, whose sum is σ = 35909583360. Its totient is φ = 2887446528.

The previous prime is 11101011001. The next prime is 11101011017. The reversal of 11101011012 is 21011010111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11101010985 and 11101011003.

It is not an unprimeable number, because it can be changed into a prime (11101011017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 709708 + ... + 725180.

It is an arithmetic number, because the mean of its divisors is an integer number (187029080).

Almost surely, 2^11101011012 is an apocalyptic number.

11101011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11101011012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17954791680).

11101011012 is an abundant number, since it is smaller than the sum of its proper divisors (24808572348).

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

11101011012 is a wasteful number, since it uses less digits than its factorization.

11101011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15579 (or 15571 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11101011012 its reverse (21011010111), we get a palindrome (32112021123).

Subtracting 11101011012 from its reverse (21011010111), we obtain a palindrome (9909999099).

The spelling of 11101011012 in words is "eleven billion, one hundred one million, eleven thousand, twelve".