22012012212109 has 2 divisors, whose sum is σ = 22012012212110. Its totient is φ = 22012012212108.

The previous prime is 22012012212097. The next prime is 22012012212133. The reversal of 22012012212109 is 90121221021022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21606255952009 + 405756260100 = 4648253^2 + 636990^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012012212109 - 2¹¹ = 22012012210061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22012012210109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006006106054 + 11006006106055.

It is an arithmetic number, because the mean of its divisors is an integer number (11006006106055).

Almost surely, 2^{22012012212109} is an apocalyptic number.

It is an amenable number.

22012012212109 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012012212109 is an equidigital number, since it uses as much as digits as its factorization.

22012012212109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 22012012212109 in words is "twenty-two trillion, twelve billion, twelve million, two hundred twelve thousand, one hundred nine".