22031211071 has 2 divisors, whose sum is σ = 22031211072. Its totient is φ = 22031211070.

The previous prime is 22031211067. The next prime is 22031211107. The reversal of 22031211071 is 17011213022.

Together with next prime (22031211107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22031211071 - 2² = 22031211067 is a prime.

It is a super-2 number, since 2×22031211071² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22031211001) 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, 11015605535 + 11015605536.

It is an arithmetic number, because the mean of its divisors is an integer number (11015605536).

Almost surely, 2^22031211071 is an apocalyptic number.

22031211071 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031211071 is an equidigital number, since it uses as much as digits as its factorization.

22031211071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 22031211071 its reverse (17011213022), we get a palindrome (39042424093).

The spelling of 22031211071 in words is "twenty-two billion, thirty-one million, two hundred eleven thousand, seventy-one".