2011131202169 has 2 divisors, whose sum is σ = 2011131202170. Its totient is φ = 2011131202168.

The previous prime is 2011131202153. The next prime is 2011131202177. The reversal of 2011131202169 is 9612021311102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1380954019600 + 630177182569 = 1175140^2 + 793837^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011131202169 - 2⁴ = 2011131202153 is a prime.

It is a super-2 number, since 2×2011131202169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2011131202469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005565601084 + 1005565601085.

It is an arithmetic number, because the mean of its divisors is an integer number (1005565601085).

Almost surely, 2^{2011131202169} is an apocalyptic number.

It is an amenable number.

2011131202169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011131202169 is an equidigital number, since it uses as much as digits as its factorization.

2011131202169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 2011131202169 in words is "two trillion, eleven billion, one hundred thirty-one million, two hundred two thousand, one hundred sixty-nine".