10022221 has 4 divisors (see below), whose sum is σ = 10933344. Its totient is φ = 9111100.

The previous prime is 10022219. The next prime is 10022251. The reversal of 10022221 is 12222001.

10022221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12222001 = 11 ⋅1111091.

It is a cyclic number.

It is not a de Polignac number, because 10022221 - 2¹ = 10022219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10022198 and 10022207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10022251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455545 + ... + 455566.

It is an arithmetic number, because the mean of its divisors is an integer number (2733336).

Almost surely, 2^10022221 is an apocalyptic number.

10022221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10022221 is a deficient number, since it is larger than the sum of its proper divisors (911123).

10022221 is an equidigital number, since it uses as much as digits as its factorization.

10022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911122.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 10022221 is about 3165.7891591197. The cubic root of 10022221 is about 215.6029299262.

Adding to 10022221 its reverse (12222001), we get a palindrome (22244222).

It can be divided in two parts, 1002 and 2221, that added together give a palindrome (3223).

The spelling of 10022221 in words is "ten million, twenty-two thousand, two hundred twenty-one".