10221867 has 36 divisors (see below), whose sum is σ = 16390920. Its totient is φ = 6120576.

The previous prime is 10221863. The next prime is 10221877. The reversal of 10221867 is 76812201.

It is not a de Polignac number, because 10221867 - 2² = 10221863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10221867.

It is not an unprimeable number, because it can be changed into a prime (10221863) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 90403 + ... + 90515.

Almost surely, 2^10221867 is an apocalyptic number.

10221867 is a deficient number, since it is larger than the sum of its proper divisors (6169053).

10221867 is a wasteful number, since it uses less digits than its factorization.

10221867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 10221867 is about 3197.1654633441. The cubic root of 10221867 is about 217.0251551179.

The spelling of 10221867 in words is "ten million, two hundred twenty-one thousand, eight hundred sixty-seven".