30214021 has 2 divisors, whose sum is σ = 30214022. Its totient is φ = 30214020.

The previous prime is 30213949. The next prime is 30214033. The reversal of 30214021 is 12041203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15880225 + 14333796 = 3985^2 + 3786^2 .

It is a cyclic number.

It is not a de Polignac number, because 30214021 - 2⁷ = 30213893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30213992 and 30214010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30214621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15107010 + 15107011.

It is an arithmetic number, because the mean of its divisors is an integer number (15107011).

Almost surely, 2^30214021 is an apocalyptic number.

It is an amenable number.

30214021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30214021 is an equidigital number, since it uses as much as digits as its factorization.

30214021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30214021 is about 5496.7282086710. The cubic root of 30214021 is about 311.4604037486.

Adding to 30214021 its reverse (12041203), we get a palindrome (42255224).

The spelling of 30214021 in words is "thirty million, two hundred fourteen thousand, twenty-one".