211310032213081 has 2 divisors, whose sum is σ = 211310032213082. Its totient is φ = 211310032213080.

The previous prime is 211310032213039. The next prime is 211310032213177. The reversal of 211310032213081 is 180312230013112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148845368048400 + 62464664164681 = 12200220^2 + 7903459^2 .

It is a cyclic number.

It is not a de Polignac number, because 211310032213081 - 2²⁷ = 211309897995353 is a prime.

It is a super-2 number, since 2×211310032213081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211310032813081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105655016106540 + 105655016106541.

It is an arithmetic number, because the mean of its divisors is an integer number (105655016106541).

Almost surely, 2^{211310032213081} is an apocalyptic number.

It is an amenable number.

211310032213081 is a deficient number, since it is larger than the sum of its proper divisors (1).

211310032213081 is an equidigital number, since it uses as much as digits as its factorization.

211310032213081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 211310032213081 its reverse (180312230013112), we get a palindrome (391622262226193).

The spelling of 211310032213081 in words is "two hundred eleven trillion, three hundred ten billion, thirty-two million, two hundred thirteen thousand, eighty-one".