30021113 has 4 divisors (see below), whose sum is σ = 30989568. Its totient is φ = 29052660.

The previous prime is 30021091. The next prime is 30021137. The reversal of 30021113 is 31112003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30021113 - 2¹⁴ = 30004729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021094 and 30021103.

It is not an unprimeable number, because it can be changed into a prime (30021163) 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, 484181 + ... + 484242.

It is an arithmetic number, because the mean of its divisors is an integer number (7747392).

Almost surely, 2^30021113 is an apocalyptic number.

It is an amenable number.

30021113 is a deficient number, since it is larger than the sum of its proper divisors (968455).

30021113 is an equidigital number, since it uses as much as digits as its factorization.

30021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968454.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 30021113 is about 5479.1525804635. The cubic root of 30021113 is about 310.7961257245.

Adding to 30021113 its reverse (31112003), we get a palindrome (61133116).

The spelling of 30021113 in words is "thirty million, twenty-one thousand, one hundred thirteen".