12212120122011 has 12 divisors (see below), whose sum is σ = 17639760255000. Its totient is φ = 8141399019360.

The previous prime is 12212120121991. The next prime is 12212120122019. The reversal of 12212120122011 is 11022102121221.

12212120122011 is a `hidden beast` number, since 1 + 221 + 21 + 201 + 220 + 1 + 1 = 666.

It is not a de Polignac number, because 12212120122011 - 2¹⁸ = 12212119859867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212120122019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7473615 + ... + 8959863.

It is an arithmetic number, because the mean of its divisors is an integer number (1469980021250).

Almost surely, 2^{12212120122011} is an apocalyptic number.

12212120122011 is a deficient number, since it is larger than the sum of its proper divisors (5427640132989).

12212120122011 is a wasteful number, since it uses less digits than its factorization.

12212120122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399226 (or 2399223 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12212120122011 its reverse (11022102121221), we get a palindrome (23234222243232).

The spelling of 12212120122011 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred twenty-two thousand, eleven".