30144072221 has 2 divisors, whose sum is σ = 30144072222. Its totient is φ = 30144072220.

The previous prime is 30144072209. The next prime is 30144072227. The reversal of 30144072221 is 12227044103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24212916025 + 5931156196 = 155605^2 + 77014^2 .

It is a cyclic number.

It is not a de Polignac number, because 30144072221 - 2⁶ = 30144072157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30144072227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15072036110 + 15072036111.

It is an arithmetic number, because the mean of its divisors is an integer number (15072036111).

Almost surely, 2^30144072221 is an apocalyptic number.

It is an amenable number.

30144072221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30144072221 is an equidigital number, since it uses as much as digits as its factorization.

30144072221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The spelling of 30144072221 in words is "thirty billion, one hundred forty-four million, seventy-two thousand, two hundred twenty-one".