12011022122211 has 56 divisors (see below), whose sum is σ = 20784681032544. Its totient is φ = 6795486057600.

The previous prime is 12011022122191. The next prime is 12011022122237. The reversal of 12011022122211 is 11222122011021.

12011022122211 is a `hidden beast` number, since 1 + 201 + 10 + 221 + 22 + 211 = 666.

It is not a de Polignac number, because 12011022122211 - 2²² = 12011017927907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011022022211) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 11136666 + ... + 12167471.

Almost surely, 2^{12011022122211} is an apocalyptic number.

12011022122211 is a deficient number, since it is larger than the sum of its proper divisors (8773658910333).

12011022122211 is an equidigital number, since it uses as much as digits as its factorization.

12011022122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23304263 (or 23304248 counting only the distinct ones).

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

Adding to 12011022122211 its reverse (11222122011021), we get a palindrome (23233144133232).

The spelling of 12011022122211 in words is "twelve trillion, eleven billion, twenty-two million, one hundred twenty-two thousand, two hundred eleven".