10242221 has 8 divisors (see below), whose sum is σ = 11219904. Its totient is φ = 9272320.

The previous prime is 10242187. The next prime is 10242233. The reversal of 10242221 is 12224201.

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

It is a cyclic number.

It is not a de Polignac number, because 10242221 - 2⁶ = 10242157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10242196 and 10242205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10242241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1016 + ... + 4638.

It is an arithmetic number, because the mean of its divisors is an integer number (1402488).

Almost surely, 2^10242221 is an apocalyptic number.

10242221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10242221 is a deficient number, since it is larger than the sum of its proper divisors (977683).

10242221 is a wasteful number, since it uses less digits than its factorization.

10242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 10242221 is about 3200.3470124347. The cubic root of 10242221 is about 217.1691079883.

Adding to 10242221 its reverse (12224201), we get a palindrome (22466422).

The spelling of 10242221 in words is "ten million, two hundred forty-two thousand, two hundred twenty-one".