10222221 has 8 divisors (see below), whose sum is σ = 13671424. Its totient is φ = 6793920.

The previous prime is 10222213. The next prime is 10222229. The reversal of 10222221 is 12222201.

It is an interprime number because it is at equal distance from previous prime (10222213) and next prime (10222229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10222221 - 2³ = 10222213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10222197 and 10222206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4045 + ... + 6066.

It is an arithmetic number, because the mean of its divisors is an integer number (1708928).

Almost surely, 2^10222221 is an apocalyptic number.

It is an amenable number.

10222221 is a deficient number, since it is larger than the sum of its proper divisors (3449203).

10222221 is a wasteful number, since it uses less digits than its factorization.

10222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 10222221 is about 3197.2208244036. The cubic root of 10222221 is about 217.0276604012.

Adding to 10222221 its reverse (12222201), we get a palindrome (22444422).

The spelling of 10222221 in words is "ten million, two hundred twenty-two thousand, two hundred twenty-one".