222202110100221 has 12 divisors (see below), whose sum is σ = 328786862100060. Its totient is φ = 144521697625920.

The previous prime is 222202110100153. The next prime is 222202110100283. The reversal of 222202110100221 is 122001011202222.

It is a happy number.

222202110100221 is a `hidden beast` number, since 2 + 2 + 220 + 211 + 0 + 10 + 0 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32295795677721 + 189906314422500 = 5682939^2 + 13780650^2 .

It is not a de Polignac number, because 222202110100221 - 2¹⁷ = 222202109969149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222202110100194 and 222202110100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222202110100921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301086869686 + ... + 301086870423.

It is an arithmetic number, because the mean of its divisors is an integer number (27398905175005).

Almost surely, 2^{222202110100221} is an apocalyptic number.

It is an amenable number.

222202110100221 is a deficient number, since it is larger than the sum of its proper divisors (106584751999839).

222202110100221 is a wasteful number, since it uses less digits than its factorization.

222202110100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602173740156 (or 602173740153 counting only the distinct ones).

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

Adding to 222202110100221 its reverse (122001011202222), we get a palindrome (344203121302443).

The spelling of 222202110100221 in words is "two hundred twenty-two trillion, two hundred two billion, one hundred ten million, one hundred thousand, two hundred twenty-one".