30250221217 has 2 divisors, whose sum is σ = 30250221218. Its totient is φ = 30250221216.

The previous prime is 30250221181. The next prime is 30250221293. The reversal of 30250221217 is 71212205203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25123518016 + 5126703201 = 158504^2 + 71601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30250221217 is a prime.

It is a super-2 number, since 2×30250221217² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30250221191 and 30250221200.

It is not a weakly prime, because it can be changed into another prime (30250291217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15125110608 + 15125110609.

It is an arithmetic number, because the mean of its divisors is an integer number (15125110609).

Almost surely, 2^30250221217 is an apocalyptic number.

It is an amenable number.

30250221217 is a deficient number, since it is larger than the sum of its proper divisors (1).

30250221217 is an equidigital number, since it uses as much as digits as its factorization.

30250221217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The spelling of 30250221217 in words is "thirty billion, two hundred fifty million, two hundred twenty-one thousand, two hundred seventeen".