30212231110021 has 2 divisors, whose sum is σ = 30212231110022. Its totient is φ = 30212231110020.

The previous prime is 30212231109919. The next prime is 30212231110163. The reversal of 30212231110021 is 12001113221203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29127069302500 + 1085161807521 = 5396950^2 + 1041711^2 .

It is a cyclic number.

It is not a de Polignac number, because 30212231110021 - 2¹⁵ = 30212231077253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30212231170021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106115555010 + 15106115555011.

It is an arithmetic number, because the mean of its divisors is an integer number (15106115555011).

Almost surely, 2^{30212231110021} is an apocalyptic number.

It is an amenable number.

30212231110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30212231110021 is an equidigital number, since it uses as much as digits as its factorization.

30212231110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 30212231110021 its reverse (12001113221203), we get a palindrome (42213344331224).

The spelling of 30212231110021 in words is "thirty trillion, two hundred twelve billion, two hundred thirty-one million, one hundred ten thousand, twenty-one".