10021199 has 4 divisors (see below), whose sum is σ = 10234464. Its totient is φ = 9807936.

The previous prime is 10021163. The next prime is 10021213. The reversal of 10021199 is 99112001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99112001 = 191 ⋅518911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021199 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 (10021129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106562 + ... + 106655.

It is an arithmetic number, because the mean of its divisors is an integer number (2558616).

Almost surely, 2^10021199 is an apocalyptic number.

10021199 is a deficient number, since it is larger than the sum of its proper divisors (213265).

10021199 is an equidigital number, since it uses as much as digits as its factorization.

10021199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213264.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 10021199 is about 3165.6277418547. The cubic root of 10021199 is about 215.5956010888.

The spelling of 10021199 in words is "ten million, twenty-one thousand, one hundred ninety-nine".