30221131249 has 2 divisors, whose sum is σ = 30221131250. Its totient is φ = 30221131248.

The previous prime is 30221131123. The next prime is 30221131277. The reversal of 30221131249 is 94213112203.

It is a happy number.

It is an a-pointer prime, because the next prime (30221131277) can be obtained adding 30221131249 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27666334224 + 2554797025 = 166332^2 + 50545^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221131249 - 2⁷ = 30221131121 is a prime.

It is not a weakly prime, because it can be changed into another prime (30221131049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110565624 + 15110565625.

It is an arithmetic number, because the mean of its divisors is an integer number (15110565625).

Almost surely, 2^30221131249 is an apocalyptic number.

It is an amenable number.

30221131249 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221131249 is an equidigital number, since it uses as much as digits as its factorization.

30221131249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 30221131249 in words is "thirty billion, two hundred twenty-one million, one hundred thirty-one thousand, two hundred forty-nine".