30203210111021 has 2 divisors, whose sum is σ = 30203210111022. Its totient is φ = 30203210111020.

The previous prime is 30203210110919. The next prime is 30203210111027. The reversal of 30203210111021 is 12011101230203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29027419044100 + 1175791066921 = 5387710^2 + 1084339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30203210111021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30203210111027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101605055510 + 15101605055511.

It is an arithmetic number, because the mean of its divisors is an integer number (15101605055511).

Almost surely, 2^{30203210111021} is an apocalyptic number.

It is an amenable number.

30203210111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30203210111021 is an equidigital number, since it uses as much as digits as its factorization.

30203210111021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 30203210111021 its reverse (12011101230203), we get a palindrome (42214311341224).

The spelling of 30203210111021 in words is "thirty trillion, two hundred three billion, two hundred ten million, one hundred eleven thousand, twenty-one".