11143555212 has 12 divisors (see below), whose sum is σ = 26001628856. Its totient is φ = 3714518400.

The previous prime is 11143555187. The next prime is 11143555237. The reversal of 11143555212 is 21255534111.

It is an interprime number because it is at equal distance from previous prime (11143555187) and next prime (11143555237).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 11143555212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464314789 + ... + 464314812.

Almost surely, 2^11143555212 is an apocalyptic number.

11143555212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11143555212 is an abundant number, since it is smaller than the sum of its proper divisors (14858073644).

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

11143555212 is a wasteful number, since it uses less digits than its factorization.

11143555212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928629608 (or 928629606 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The spelling of 11143555212 in words is "eleven billion, one hundred forty-three million, five hundred fifty-five thousand, two hundred twelve".