12122021211 has 8 divisors (see below), whose sum is σ = 16167032640. Its totient is φ = 8079178632.

The previous prime is 12122021209. The next prime is 12122021221. The reversal of 12122021211 is 11212022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12122021211 - 2¹ = 12122021209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12122021221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529125 + ... + 551558.

It is an arithmetic number, because the mean of its divisors is an integer number (2020879080).

Almost surely, 2^12122021211 is an apocalyptic number.

12122021211 is a deficient number, since it is larger than the sum of its proper divisors (4045011429).

12122021211 is a wasteful number, since it uses less digits than its factorization.

12122021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084425.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12122021211 its reverse (11212022121), we get a palindrome (23334043332).

The spelling of 12122021211 in words is "twelve billion, one hundred twenty-two million, twenty-one thousand, two hundred eleven".