30022021 has 4 divisors (see below), whose sum is σ = 30118252. Its totient is φ = 29925792.

The previous prime is 30022007. The next prime is 30022067. The reversal of 30022021 is 12022003.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6305121 + 23716900 = 2511^2 + 4870^2 .

It is a cyclic number.

It is not a de Polignac number, because 30022021 - 2²³ = 21633413 is a prime.

It is a super-3 number, since 3×30022021³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021989 and 30022007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30022081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47646 + ... + 48271.

It is an arithmetic number, because the mean of its divisors is an integer number (7529563).

Almost surely, 2^30022021 is an apocalyptic number.

It is an amenable number.

30022021 is a deficient number, since it is larger than the sum of its proper divisors (96231).

30022021 is an equidigital number, since it uses as much as digits as its factorization.

30022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96230.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 30022021 is about 5479.2354393656. The cubic root of 30022021 is about 310.7992590753.

Adding to 30022021 its reverse (12022003), we get a palindrome (42044024).

The spelling of 30022021 in words is "thirty million, twenty-two thousand, twenty-one".