12011512012055 has 8 divisors (see below), whose sum is σ = 14437327981632. Its totient is φ = 9593533898208.

The previous prime is 12011512012037. The next prime is 12011512012103. The reversal of 12011512012055 is 55021021511021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011512012055 - 2⁸ = 12011512011799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959460559 + ... + 1959466688.

It is an arithmetic number, because the mean of its divisors is an integer number (1804665997704).

Almost surely, 2^{12011512012055} is an apocalyptic number.

12011512012055 is a deficient number, since it is larger than the sum of its proper divisors (2425815969577).

12011512012055 is an equidigital number, since it uses as much as digits as its factorization.

12011512012055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918927865.

The product of its (nonzero) digits is 1000, while the sum is 26.

Adding to 12011512012055 its reverse (55021021511021), we get a palindrome (67032533523076).

The spelling of 12011512012055 in words is "twelve trillion, eleven billion, five hundred twelve million, twelve thousand, fifty-five".