11121534312 has 96 divisors (see below), whose sum is σ = 32463515520. Its totient is φ = 3165765120.

The previous prime is 11121534289. The next prime is 11121534313. The reversal of 11121534312 is 21343512111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (11121534313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301248 + ... + 336144.

It is an arithmetic number, because the mean of its divisors is an integer number (338161620).

Almost surely, 2^11121534312 is an apocalyptic number.

11121534312 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 11121534312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16231757760).

11121534312 is an abundant number, since it is smaller than the sum of its proper divisors (21341981208).

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

11121534312 is a wasteful number, since it uses less digits than its factorization.

11121534312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35191 (or 35180 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The spelling of 11121534312 in words is "eleven billion, one hundred twenty-one million, five hundred thirty-four thousand, three hundred twelve".