211367152081 has 2 divisors, whose sum is σ = 211367152082. Its totient is φ = 211367152080.

The previous prime is 211367152049. The next prime is 211367152091. The reversal of 211367152081 is 180251763112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190597730625 + 20769421456 = 436575^2 + 144116^2 .

It is a cyclic number.

It is not a de Polignac number, because 211367152081 - 2⁵ = 211367152049 is a prime.

It is a super-2 number, since 2×211367152081² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211367152081.

It is not a weakly prime, because it can be changed into another prime (211367152091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105683576040 + 105683576041.

It is an arithmetic number, because the mean of its divisors is an integer number (105683576041).

Almost surely, 2^211367152081 is an apocalyptic number.

It is an amenable number.

211367152081 is a deficient number, since it is larger than the sum of its proper divisors (1).

211367152081 is an equidigital number, since it uses as much as digits as its factorization.

211367152081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 211367152081 in words is "two hundred eleven billion, three hundred sixty-seven million, one hundred fifty-two thousand, eighty-one".