12122211211 has 8 divisors (see below), whose sum is σ = 13279564800. Its totient is φ = 10974080040.

The previous prime is 12122211187. The next prime is 12122211217. The reversal of 12122211211 is 11211222121.

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

It is not a de Polignac number, because 12122211211 - 2⁷ = 12122211083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122211217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302851 + ... + 2308108.

It is an arithmetic number, because the mean of its divisors is an integer number (1659945600).

Almost surely, 2^12122211211 is an apocalyptic number.

12122211211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12122211211 is a deficient number, since it is larger than the sum of its proper divisors (1157353589).

12122211211 is a wasteful number, since it uses less digits than its factorization.

12122211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611209.

The product of its digits is 32, while the sum is 16.

Adding to 12122211211 its reverse (11211222121), we get a palindrome (23333433332).

The spelling of 12122211211 in words is "twelve billion, one hundred twenty-two million, two hundred eleven thousand, two hundred eleven".