1222201110221 has 32 divisors (see below), whose sum is σ = 1506998438400. Its totient is φ = 965249374464.

The previous prime is 1222201110217. The next prime is 1222201110233. The reversal of 1222201110221 is 1220111022221.

It is a cyclic number.

It is not a de Polignac number, because 1222201110221 - 2² = 1222201110217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222201110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222201110211) 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, 153751355 + ... + 153759303.

It is an arithmetic number, because the mean of its divisors is an integer number (47093701200).

Almost surely, 2^{1222201110221} is an apocalyptic number.

It is an amenable number.

1222201110221 is a deficient number, since it is larger than the sum of its proper divisors (284797328179).

1222201110221 is a wasteful number, since it uses less digits than its factorization.

1222201110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10845.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222201110221 its reverse (1220111022221), we get a palindrome (2442312132442).

The spelling of 1222201110221 in words is "one trillion, two hundred twenty-two billion, two hundred one million, one hundred ten thousand, two hundred twenty-one".