30330555421 has 2 divisors, whose sum is σ = 30330555422. Its totient is φ = 30330555420.

The previous prime is 30330555371. The next prime is 30330555427. The reversal of 30330555421 is 12455503303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24841227321 + 5489328100 = 157611^2 + 74090^2 .

It is an emirp because it is prime and its reverse (12455503303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30330555421 - 2¹¹ = 30330553373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30330555427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165277710 + 15165277711.

It is an arithmetic number, because the mean of its divisors is an integer number (15165277711).

Almost surely, 2^30330555421 is an apocalyptic number.

It is an amenable number.

30330555421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30330555421 is an equidigital number, since it uses as much as digits as its factorization.

30330555421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 30330555421 in words is "thirty billion, three hundred thirty million, five hundred fifty-five thousand, four hundred twenty-one".