12021112211211 has 32 divisors (see below), whose sum is σ = 18031778706240. Its totient is φ = 8012804083200.

The previous prime is 12021112211183. The next prime is 12021112211219. The reversal of 12021112211211 is 11211221112021.

It is a happy number.

12021112211211 is a `hidden beast` number, since 1 + 20 + 211 + 1 + 221 + 1 + 211 = 666.

It is not a de Polignac number, because 12021112211211 - 2¹¹ = 12021112209163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021112211219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13461411 + ... + 14326611.

It is an arithmetic number, because the mean of its divisors is an integer number (563493084570).

Almost surely, 2^{12021112211211} is an apocalyptic number.

12021112211211 is a deficient number, since it is larger than the sum of its proper divisors (6010666495029).

12021112211211 is an frugal number, since it uses more digits than its factorization.

12021112211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871575 (or 871557 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12021112211211 its reverse (11211221112021), we get a palindrome (23232333323232).

The spelling of 12021112211211 in words is "twelve trillion, twenty-one billion, one hundred twelve million, two hundred eleven thousand, two hundred eleven".