211133422223081 has 2 divisors, whose sum is σ = 211133422223082. Its totient is φ = 211133422223080.

The previous prime is 211133422222951. The next prime is 211133422223089. The reversal of 211133422223081 is 180322224331112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210292313128681 + 841109094400 = 14501459^2 + 917120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211133422223081 is a prime.

It is a super-2 number, since 2×211133422223081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211133422223089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105566711111540 + 105566711111541.

It is an arithmetic number, because the mean of its divisors is an integer number (105566711111541).

Almost surely, 2^{211133422223081} is an apocalyptic number.

It is an amenable number.

211133422223081 is a deficient number, since it is larger than the sum of its proper divisors (1).

211133422223081 is an equidigital number, since it uses as much as digits as its factorization.

211133422223081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

Adding to 211133422223081 its reverse (180322224331112), we get a palindrome (391455646554193).

The spelling of 211133422223081 in words is "two hundred eleven trillion, one hundred thirty-three billion, four hundred twenty-two million, two hundred twenty-three thousand, eighty-one".