10198221 has 8 divisors (see below), whose sum is σ = 14833824. Its totient is φ = 6180720.

The previous prime is 10198213. The next prime is 10198247. The reversal of 10198221 is 12289101.

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

It is not a de Polignac number, because 10198221 - 2³ = 10198213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10198191 and 10198200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10198211) 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, 154486 + ... + 154551.

It is an arithmetic number, because the mean of its divisors is an integer number (1854228).

Almost surely, 2^10198221 is an apocalyptic number.

10198221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10198221 is a deficient number, since it is larger than the sum of its proper divisors (4635603).

10198221 is a wasteful number, since it uses less digits than its factorization.

10198221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309051.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 10198221 is about 3193.4653591357. The cubic root of 10198221 is about 216.8576795487.

The spelling of 10198221 in words is "ten million, one hundred ninety-eight thousand, two hundred twenty-one".