2091188119812 has 48 divisors (see below), whose sum is σ = 5335317809472. Its totient is φ = 632229857280.

The previous prime is 2091188119789. The next prime is 2091188119817. The reversal of 2091188119812 is 2189118811902.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2091188119817) 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, 18236533 + ... + 18350844.

It is an arithmetic number, because the mean of its divisors is an integer number (111152454364).

Almost surely, 2^{2091188119812} is an apocalyptic number.

2091188119812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2091188119812 is an abundant number, since it is smaller than the sum of its proper divisors (3244129689660).

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

2091188119812 is a wasteful number, since it uses less digits than its factorization.

2091188119812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36587828 (or 36587826 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 51.

The spelling of 2091188119812 in words is "two trillion, ninety-one billion, one hundred eighty-eight million, one hundred nineteen thousand, eight hundred twelve".