30021107 has 4 divisors (see below), whose sum is σ = 30296640. Its totient is φ = 29745576.

The previous prime is 30021091. The next prime is 30021137. The reversal of 30021107 is 70112003.

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

It is a cyclic number.

It is not a de Polignac number, because 30021107 - 2⁴ = 30021091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021091 and 30021100.

It is not an unprimeable number, because it can be changed into a prime (30021137) 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, 137603 + ... + 137820.

It is an arithmetic number, because the mean of its divisors is an integer number (7574160).

Almost surely, 2^30021107 is an apocalyptic number.

30021107 is a deficient number, since it is larger than the sum of its proper divisors (275533).

30021107 is a wasteful number, since it uses less digits than its factorization.

30021107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275532.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 30021107 is about 5479.1520329336. The cubic root of 30021107 is about 310.7961050193.

The spelling of 30021107 in words is "thirty million, twenty-one thousand, one hundred seven".