211131202069 has 2 divisors, whose sum is σ = 211131202070. Its totient is φ = 211131202068.

The previous prime is 211131202001. The next prime is 211131202097. The reversal of 211131202069 is 960202131112.

It is an a-pointer prime, because the next prime (211131202097) can be obtained adding 211131202069 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174317105169 + 36814096900 = 417513^2 + 191870^2 .

It is a cyclic number.

It is not a de Polignac number, because 211131202069 - 2¹⁹ = 211130677781 is a prime.

It is a super-2 number, since 2×211131202069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211131205069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105565601034 + 105565601035.

It is an arithmetic number, because the mean of its divisors is an integer number (105565601035).

Almost surely, 2^211131202069 is an apocalyptic number.

It is an amenable number.

211131202069 is a deficient number, since it is larger than the sum of its proper divisors (1).

211131202069 is an equidigital number, since it uses as much as digits as its factorization.

211131202069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 211131202069 in words is "two hundred eleven billion, one hundred thirty-one million, two hundred two thousand, sixty-nine".