10087221 has 8 divisors (see below), whose sum is σ = 13509280. Its totient is φ = 6694992.

The previous prime is 10087219. The next prime is 10087223. The reversal of 10087221 is 12278001.

10087221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10087219) and next prime (10087223).

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

It is not a de Polignac number, because 10087221 - 2¹ = 10087219 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 (10087223) 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, 6655 + ... + 8028.

It is an arithmetic number, because the mean of its divisors is an integer number (1688660).

Almost surely, 2^10087221 is an apocalyptic number.

It is an amenable number.

10087221 is a deficient number, since it is larger than the sum of its proper divisors (3422059).

10087221 is a wasteful number, since it uses less digits than its factorization.

10087221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14915.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 10087221 is about 3176.0385702948. The cubic root of 10087221 is about 216.0680298404.

The spelling of 10087221 in words is "ten million, eighty-seven thousand, two hundred twenty-one".