10220999 has 4 divisors (see below), whose sum is σ = 10320336. Its totient is φ = 10121664.

The previous prime is 10220981. The next prime is 10221007. The reversal of 10220999 is 99902201.

10220999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10220999 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 (10220929) 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, 49514 + ... + 49719.

It is an arithmetic number, because the mean of its divisors is an integer number (2580084).

Almost surely, 2^10220999 is an apocalyptic number.

10220999 is a deficient number, since it is larger than the sum of its proper divisors (99337).

10220999 is an equidigital number, since it uses as much as digits as its factorization.

10220999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99336.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 10220999 is about 3197.0297152201. The cubic root of 10220999 is about 217.0190119751.

The spelling of 10220999 in words is "ten million, two hundred twenty thousand, nine hundred ninety-nine".