12220202202221 has 32 divisors (see below), whose sum is σ = 14457254864640. Its totient is φ = 10220380498944.

The previous prime is 12220202202217. The next prime is 12220202202251. The reversal of 12220202202221 is 12220220202221.

It is a cyclic number.

It is not a de Polignac number, because 12220202202221 - 2² = 12220202202217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220202202193 and 12220202202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220202202251) 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, 39938411 + ... + 40243223.

It is an arithmetic number, because the mean of its divisors is an integer number (451789214520).

Almost surely, 2^{12220202202221} is an apocalyptic number.

It is an amenable number.

12220202202221 is a deficient number, since it is larger than the sum of its proper divisors (2237052662419).

12220202202221 is a wasteful number, since it uses less digits than its factorization.

12220202202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311925.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12220202202221 its reverse (12220220202221), we get a palindrome (24440422404442).

The spelling of 12220202202221 in words is "twelve trillion, two hundred twenty billion, two hundred two million, two hundred two thousand, two hundred twenty-one".