30021199 has 4 divisors (see below), whose sum is σ = 32330536. Its totient is φ = 27711864.

The previous prime is 30021193. The next prime is 30021217. The reversal of 30021199 is 99112003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99112003 = 1733 ⋅57191.

It is a cyclic number.

It is not a de Polignac number, because 30021199 - 2⁷ = 30021071 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 (30021193) 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, 1154649 + ... + 1154674.

It is an arithmetic number, because the mean of its divisors is an integer number (8082634).

Almost surely, 2^30021199 is an apocalyptic number.

30021199 is a deficient number, since it is larger than the sum of its proper divisors (2309337).

30021199 is a wasteful number, since it uses less digits than its factorization.

30021199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309336.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 30021199 is about 5479.1604283868. The cubic root of 30021199 is about 310.7964224983.

The spelling of 30021199 in words is "thirty million, twenty-one thousand, one hundred ninety-nine".