2111505336125 has 16 divisors (see below), whose sum is σ = 2636222896944. Its totient is φ = 1688522065600.

The previous prime is 2111505336079. The next prime is 2111505336173. The reversal of 2111505336125 is 5216335051112.

It can be written as a sum of positive squares in 8 ways, for example, as 230871601081 + 1880633735044 = 480491^2 + 1371362^2 .

It is not a de Polignac number, because 2111505336125 - 2¹⁴ = 2111505319741 is a prime.

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, 3100154 + ... + 3719403.

It is an arithmetic number, because the mean of its divisors is an integer number (164763931059).

Almost surely, 2^{2111505336125} is an apocalyptic number.

2111505336125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111505336125 is a deficient number, since it is larger than the sum of its proper divisors (524717560819).

2111505336125 is an equidigital number, since it uses as much as digits as its factorization.

2111505336125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822049 (or 6822039 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 2111505336125 in words is "two trillion, one hundred eleven billion, five hundred five million, three hundred thirty-six thousand, one hundred twenty-five".