12122221022011 has 16 divisors (see below), whose sum is σ = 12474017677440. Its totient is φ = 11774636339200.

The previous prime is 12122221021969. The next prime is 12122221022101. The reversal of 12122221022011 is 11022012222121.

It is a cyclic number.

It is not a de Polignac number, because 12122221022011 - 2³⁵ = 12087861283643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122221022011.

It is not an unprimeable number, because it can be changed into a prime (12122221025011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2080395 + ... + 5345323.

It is an arithmetic number, because the mean of its divisors is an integer number (779626104840).

Almost surely, 2^{12122221022011} is an apocalyptic number.

12122221022011 is a deficient number, since it is larger than the sum of its proper divisors (351796655429).

12122221022011 is a wasteful number, since it uses less digits than its factorization.

12122221022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265574.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12122221022011 its reverse (11022012222121), we get a palindrome (23144233244132).

The spelling of 12122221022011 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty-two thousand, eleven".