30402032021 has 2 divisors, whose sum is σ = 30402032022. Its totient is φ = 30402032020.

The previous prime is 30402031981. The next prime is 30402032027. The reversal of 30402032021 is 12023020403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29126542225 + 1275489796 = 170665^2 + 35714^2 .

It is a cyclic number.

It is not a de Polignac number, because 30402032021 - 2¹⁸ = 30401769877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30402032027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15201016010 + 15201016011.

It is an arithmetic number, because the mean of its divisors is an integer number (15201016011).

Almost surely, 2^30402032021 is an apocalyptic number.

It is an amenable number.

30402032021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30402032021 is an equidigital number, since it uses as much as digits as its factorization.

30402032021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 30402032021 its reverse (12023020403), we get a palindrome (42425052424).

The spelling of 30402032021 in words is "thirty billion, four hundred two million, thirty-two thousand, twenty-one".