30021231220249 has 2 divisors, whose sum is σ = 30021231220250. Its totient is φ = 30021231220248.

The previous prime is 30021231220217. The next prime is 30021231220313. The reversal of 30021231220249 is 94202213212003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22185682588224 + 7835548632025 = 4710168^2 + 2799205^2 .

It is a cyclic number.

It is not a de Polignac number, because 30021231220249 - 2⁵ = 30021231220217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30021231220249.

It is not a weakly prime, because it can be changed into another prime (30021231226249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010615610124 + 15010615610125.

It is an arithmetic number, because the mean of its divisors is an integer number (15010615610125).

Almost surely, 2^{30021231220249} is an apocalyptic number.

It is an amenable number.

30021231220249 is a deficient number, since it is larger than the sum of its proper divisors (1).

30021231220249 is an equidigital number, since it uses as much as digits as its factorization.

30021231220249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 30021231220249 in words is "thirty trillion, twenty-one billion, two hundred thirty-one million, two hundred twenty thousand, two hundred forty-nine".