12122212220211 has 32 divisors (see below), whose sum is σ = 16915844381760. Its totient is φ = 7713394850304.

The previous prime is 12122212220201. The next prime is 12122212220233. The reversal of 12122212220211 is 11202221222121.

12122212220211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12122212220211 - 2²⁷ = 12122078002483 is a prime.

It is a super-2 number, since 2×12122212220211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12122212220201) 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, 35297721 + ... + 35639493.

It is an arithmetic number, because the mean of its divisors is an integer number (528620136930).

Almost surely, 2^{12122212220211} is an apocalyptic number.

12122212220211 is a deficient number, since it is larger than the sum of its proper divisors (4793632161549).

12122212220211 is a wasteful number, since it uses less digits than its factorization.

12122212220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347895.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12122212220211 its reverse (11202221222121), we get a palindrome (23324433442332).

The spelling of 12122212220211 in words is "twelve trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty thousand, two hundred eleven".