10221394 has 8 divisors (see below), whose sum is σ = 15387120. Its totient is φ = 5092356.

The previous prime is 10221391. The next prime is 10221397. The reversal of 10221394 is 49312201.

It is an interprime number because it is at equal distance from previous prime (10221391) and next prime (10221397).

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

It is not an unprimeable number, because it can be changed into a prime (10221391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8464 + ... + 9595.

It is an arithmetic number, because the mean of its divisors is an integer number (1923390).

Almost surely, 2^10221394 is an apocalyptic number.

10221394 is a deficient number, since it is larger than the sum of its proper divisors (5165726).

10221394 is a wasteful number, since it uses less digits than its factorization.

10221394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18344.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 10221394 is about 3197.0914907146. The cubic root of 10221394 is about 217.0218075728.

Adding to 10221394 its reverse (49312201), we get a palindrome (59533595).

The spelling of 10221394 in words is "ten million, two hundred twenty-one thousand, three hundred ninety-four".