30231466228921 has 2 divisors, whose sum is σ = 30231466228922. Its totient is φ = 30231466228920.

The previous prime is 30231466228801. The next prime is 30231466228949. The reversal of 30231466228921 is 12982266413203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17097075489321 + 13134390739600 = 4134861^2 + 3624140^2 .

It is a cyclic number.

It is not a de Polignac number, because 30231466228921 - 2⁹ = 30231466228409 is a prime.

It is not a weakly prime, because it can be changed into another prime (30231466228991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15115733114460 + 15115733114461.

It is an arithmetic number, because the mean of its divisors is an integer number (15115733114461).

Almost surely, 2^{30231466228921} is an apocalyptic number.

It is an amenable number.

30231466228921 is a deficient number, since it is larger than the sum of its proper divisors (1).

30231466228921 is an equidigital number, since it uses as much as digits as its factorization.

30231466228921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 30231466228921 in words is "thirty trillion, two hundred thirty-one billion, four hundred sixty-six million, two hundred twenty-eight thousand, nine hundred twenty-one".