10222100221 has 6 divisors (see below), whose sum is σ = 10858771130. Its totient is φ = 9620799936.

The previous prime is 10222100191. The next prime is 10222100267. The reversal of 10222100221 is 12200122201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1383468025 + 8838632196 = 37195^2 + 94014^2 .

It is not a de Polignac number, because 10222100221 - 2⁷ = 10222100093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222100281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17685006 + ... + 17685583.

Almost surely, 2^10222100221 is an apocalyptic number.

It is an amenable number.

10222100221 is a deficient number, since it is larger than the sum of its proper divisors (636670909).

10222100221 is an equidigital number, since it uses as much as digits as its factorization.

10222100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35370623 (or 35370606 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10222100221 its reverse (12200122201), we get a palindrome (22422222422).

The spelling of 10222100221 in words is "ten billion, two hundred twenty-two million, one hundred thousand, two hundred twenty-one".