30302032021 has 2 divisors, whose sum is σ = 30302032022. Its totient is φ = 30302032020.

The previous prime is 30302031997. The next prime is 30302032037. The reversal of 30302032021 is 12023020303.

It is an a-pointer prime, because the next prime (30302032037) can be obtained adding 30302032021 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30236340996 + 65691025 = 173886^2 + 8105^2 .

It is a cyclic number.

It is not a de Polignac number, because 30302032021 - 2¹⁷ = 30301900949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30302031986 and 30302032004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30302032921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15151016010 + 15151016011.

It is an arithmetic number, because the mean of its divisors is an integer number (15151016011).

Almost surely, 2^30302032021 is an apocalyptic number.

It is an amenable number.

30302032021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30302032021 is an equidigital number, since it uses as much as digits as its factorization.

30302032021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30302032021 its reverse (12023020303), we get a palindrome (42325052324).

The spelling of 30302032021 in words is "thirty billion, three hundred two million, thirty-two thousand, twenty-one".