12221211022 has 16 divisors (see below), whose sum is σ = 19436464080. Its totient is φ = 5743363968.

The previous prime is 12221211019. The next prime is 12221211031. The reversal of 12221211022 is 22011212221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12221210987 and 12221211005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218073 + ... + 268324.

It is an arithmetic number, because the mean of its divisors is an integer number (1214779005).

Almost surely, 2^12221211022 is an apocalyptic number.

12221211022 is a deficient number, since it is larger than the sum of its proper divisors (7215253058).

12221211022 is a wasteful number, since it uses less digits than its factorization.

12221211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487155.

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

Adding to 12221211022 its reverse (22011212221), we get a palindrome (34232423243).

The spelling of 12221211022 in words is "twelve billion, two hundred twenty-one million, two hundred eleven thousand, twenty-two".