10204221 has 8 divisors (see below), whose sum is σ = 13650624. Its totient is φ = 6780320.

The previous prime is 10204219. The next prime is 10204223. The reversal of 10204221 is 12240201.

It is an interprime number because it is at equal distance from previous prime (10204219) and next prime (10204223).

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 10204221 - 2¹ = 10204219 is a prime.

It is a super-2 number, since 2×10204221² = 208252252433682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10204197 and 10204206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204223) 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, 4536 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (1706328).

Almost surely, 2^10204221 is an apocalyptic number.

It is an amenable number.

10204221 is a deficient number, since it is larger than the sum of its proper divisors (3446403).

10204221 is a wasteful number, since it uses less digits than its factorization.

10204221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11251.

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

The square root of 10204221 is about 3194.4046393655. The cubic root of 10204221 is about 216.9001997422.

Adding to 10204221 its reverse (12240201), we get a palindrome (22444422).

The spelling of 10204221 in words is "ten million, two hundred four thousand, two hundred twenty-one".