12120510051055 has 16 divisors (see below), whose sum is σ = 16624501622784. Its totient is φ = 8310162972960.

The previous prime is 12120510051049. The next prime is 12120510051071. The reversal of 12120510051055 is 55015001502121.

It is not a de Polignac number, because 12120510051055 - 2⁹ = 12120510050543 is a prime.

It is a super-2 number, since 2×12120510051055² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21465631 + ... + 22023040.

It is an arithmetic number, because the mean of its divisors is an integer number (1039031351424).

Almost surely, 2^{12120510051055} is an apocalyptic number.

12120510051055 is a deficient number, since it is larger than the sum of its proper divisors (4503991571729).

12120510051055 is an equidigital number, since it uses as much as digits as its factorization.

12120510051055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43496646.

The product of its (nonzero) digits is 2500, while the sum is 28.

Adding to 12120510051055 its reverse (55015001502121), we get a palindrome (67135511553176).

The spelling of 12120510051055 in words is "twelve trillion, one hundred twenty billion, five hundred ten million, fifty-one thousand, fifty-five".