12111555069492 has 24 divisors (see below), whose sum is σ = 28262363018400. Its totient is φ = 4036889615136.

The previous prime is 12111555069461. The next prime is 12111555069547. The reversal of 12111555069492 is 29496055511121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36755142 + ... + 37083197.

It is an arithmetic number, because the mean of its divisors is an integer number (1177598459100).

Almost surely, 2^{12111555069492} is an apocalyptic number.

12111555069492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111555069492 is an abundant number, since it is smaller than the sum of its proper divisors (16150807948908).

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

12111555069492 is a wasteful number, since it uses less digits than its factorization.

12111555069492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73852015 (or 73852013 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 51.

The spelling of 12111555069492 in words is "twelve trillion, one hundred eleven billion, five hundred fifty-five million, sixty-nine thousand, four hundred ninety-two".