12220221011 has 32 divisors (see below), whose sum is σ = 13262247936. Its totient is φ = 11230912000.

The previous prime is 12220220963. The next prime is 12220221029. The reversal of 12220221011 is 11012202221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220221011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220221031) 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, 28352966 + ... + 28353396.

It is an arithmetic number, because the mean of its divisors is an integer number (414445248).

Almost surely, 2^12220221011 is an apocalyptic number.

12220221011 is a deficient number, since it is larger than the sum of its proper divisors (1042026925).

12220221011 is a wasteful number, since it uses less digits than its factorization.

12220221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12220221011 its reverse (11012202221), we get a palindrome (23232423232).

It can be divided in two parts, 122202210 and 11, that added together give a palindrome (122202221).

The spelling of 12220221011 in words is "twelve billion, two hundred twenty million, two hundred twenty-one thousand, eleven".