11225312112 has 80 divisors (see below), whose sum is σ = 34284234240. Its totient is φ = 3096635136.

The previous prime is 11225312101. The next prime is 11225312117. The reversal of 11225312112 is 21121352211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11225312117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566268 + ... + 585755.

It is an arithmetic number, because the mean of its divisors is an integer number (428552928).

Almost surely, 2^11225312112 is an apocalyptic number.

11225312112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11225312112 is an abundant number, since it is smaller than the sum of its proper divisors (23058922128).

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

11225312112 is a wasteful number, since it uses less digits than its factorization.

11225312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152070 (or 1152064 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

Adding to 11225312112 its reverse (21121352211), we get a palindrome (32346664323).

The spelling of 11225312112 in words is "eleven billion, two hundred twenty-five million, three hundred twelve thousand, one hundred twelve".