30121330273 has 2 divisors, whose sum is σ = 30121330274. Its totient is φ = 30121330272.

The previous prime is 30121330247. The next prime is 30121330297. The reversal of 30121330273 is 37203312103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22098903649 + 8022426624 = 148657^2 + 89568^2 .

It is an emirp because it is prime and its reverse (37203312103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30121330273 - 2¹⁷ = 30121199201 is a prime.

It is not a weakly prime, because it can be changed into another prime (30121330243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060665136 + 15060665137.

It is an arithmetic number, because the mean of its divisors is an integer number (15060665137).

Almost surely, 2^30121330273 is an apocalyptic number.

It is an amenable number.

30121330273 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121330273 is an equidigital number, since it uses as much as digits as its factorization.

30121330273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 25.

Adding to 30121330273 its reverse (37203312103), we get a palindrome (67324642376).

The spelling of 30121330273 in words is "thirty billion, one hundred twenty-one million, three hundred thirty thousand, two hundred seventy-three".