12212120011 has 24 divisors (see below), whose sum is σ = 15310428000. Its totient is φ = 9654930432.

The previous prime is 12212120003. The next prime is 12212120033. The reversal of 12212120011 is 11002121221.

It is not a de Polignac number, because 12212120011 - 2³ = 12212120003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 12212119973 and 12212120000.

It is not an unprimeable number, because it can be changed into a prime (12212120071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 915115 + ... + 928363.

It is an arithmetic number, because the mean of its divisors is an integer number (637934500).

Almost surely, 2^12212120011 is an apocalyptic number.

12212120011 is a deficient number, since it is larger than the sum of its proper divisors (3098307989).

12212120011 is a wasteful number, since it uses less digits than its factorization.

12212120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14723 (or 14716 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12212120011 its reverse (11002121221), we get a palindrome (23214241232).

The spelling of 12212120011 in words is "twelve billion, two hundred twelve million, one hundred twenty thousand, eleven".