11181285012 has 24 divisors (see below), whose sum is σ = 26696402656. Its totient is φ = 3640418208.

The previous prime is 11181285001. The next prime is 11181285013. The reversal of 11181285012 is 21058218111.

It is a super-2 number, since 2×11181285012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11181285013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10834063 + ... + 10835094.

Almost surely, 2^11181285012 is an apocalyptic number.

11181285012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11181285012 is an abundant number, since it is smaller than the sum of its proper divisors (15515117644).

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

11181285012 is a wasteful number, since it uses less digits than its factorization.

11181285012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21669207 (or 21669205 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 30.

The spelling of 11181285012 in words is "eleven billion, one hundred eighty-one million, two hundred eighty-five thousand, twelve".