22111212012047 has 2 divisors, whose sum is σ = 22111212012048. Its totient is φ = 22111212012046.

The previous prime is 22111212012031. The next prime is 22111212012151. The reversal of 22111212012047 is 74021021211122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22111212012047 - 2⁴ = 22111212012031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111212012247) 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, 11055606006023 + 11055606006024.

It is an arithmetic number, because the mean of its divisors is an integer number (11055606006024).

Almost surely, 2^{22111212012047} is an apocalyptic number.

22111212012047 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111212012047 is an equidigital number, since it uses as much as digits as its factorization.

22111212012047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 22111212012047 its reverse (74021021211122), we get a palindrome (96132233223169).

The spelling of 22111212012047 in words is "twenty-two trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, forty-seven".