12001022211 has 32 divisors (see below), whose sum is σ = 17040319488. Its totient is φ = 7486778880.

The previous prime is 12001022191. The next prime is 12001022227. The reversal of 12001022211 is 11222010021.

It is not a de Polignac number, because 12001022211 - 2⁶ = 12001022147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12001026211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7879096 + ... + 7880618.

It is an arithmetic number, because the mean of its divisors is an integer number (532509984).

Almost surely, 2^12001022211 is an apocalyptic number.

12001022211 is a deficient number, since it is larger than the sum of its proper divisors (5039297277).

12001022211 is a wasteful number, since it uses less digits than its factorization.

12001022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12001022211 its reverse (11222010021), we get a palindrome (23223032232).

The spelling of 12001022211 in words is "twelve billion, one million, twenty-two thousand, two hundred eleven".