1222110202221 has 16 divisors (see below), whose sum is σ = 1821375158400. Its totient is φ = 809861448384.

The previous prime is 1222110202213. The next prime is 1222110202223. The reversal of 1222110202221 is 1222020112221.

It is a happy number.

1222110202221 is a `hidden beast` number, since 12 + 221 + 10 + 202 + 221 = 666.

It is not a de Polignac number, because 1222110202221 - 2³ = 1222110202213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222110202194 and 1222110202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222110202223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135514476 + ... + 135523493.

It is an arithmetic number, because the mean of its divisors is an integer number (113835947400).

Almost surely, 2^{1222110202221} is an apocalyptic number.

It is an amenable number.

1222110202221 is a deficient number, since it is larger than the sum of its proper divisors (599264956179).

1222110202221 is a wasteful number, since it uses less digits than its factorization.

1222110202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271038145 (or 271038139 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222110202221 its reverse (1222020112221), we get a palindrome (2444130314442).

The spelling of 1222110202221 in words is "one trillion, two hundred twenty-two billion, one hundred ten million, two hundred two thousand, two hundred twenty-one".