12222122011 has 16 divisors (see below), whose sum is σ = 13401305568. Its totient is φ = 11054419200.

The previous prime is 12222121999. The next prime is 12222122021. The reversal of 12222122011 is 11022122221.

It is a happy number.

It is not a de Polignac number, because 12222122011 - 2⁵ = 12222121979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222122021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2127535 + ... + 2133271.

It is an arithmetic number, because the mean of its divisors is an integer number (837581598).

Almost surely, 2^12222122011 is an apocalyptic number.

12222122011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12222122011 is a deficient number, since it is larger than the sum of its proper divisors (1179183557).

12222122011 is a wasteful number, since it uses less digits than its factorization.

12222122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222122011 its reverse (11022122221), we get a palindrome (23244244232).

The spelling of 12222122011 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, eleven".