2111136025181 has 2 divisors, whose sum is σ = 2111136025182. Its totient is φ = 2111136025180.

The previous prime is 2111136025147. The next prime is 2111136025261. The reversal of 2111136025181 is 1815206311112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060580724025 + 1050555301156 = 1029845^2 + 1024966^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111136025181 - 2¹⁰ = 2111136024157 is a prime.

It is a super-2 number, since 2×2111136025181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111136025111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055568012590 + 1055568012591.

It is an arithmetic number, because the mean of its divisors is an integer number (1055568012591).

Almost surely, 2^{2111136025181} is an apocalyptic number.

It is an amenable number.

2111136025181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111136025181 is an equidigital number, since it uses as much as digits as its factorization.

2111136025181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 32.

The spelling of 2111136025181 in words is "two trillion, one hundred eleven billion, one hundred thirty-six million, twenty-five thousand, one hundred eighty-one".