30012210251 has 2 divisors, whose sum is σ = 30012210252. Its totient is φ = 30012210250.

The previous prime is 30012210197. The next prime is 30012210299. The reversal of 30012210251 is 15201221003.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30012210251 - 2⁶ = 30012210187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (30012230251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006105125 + 15006105126.

It is an arithmetic number, because the mean of its divisors is an integer number (15006105126).

Almost surely, 2^30012210251 is an apocalyptic number.

30012210251 is a deficient number, since it is larger than the sum of its proper divisors (1).

30012210251 is an equidigital number, since it uses as much as digits as its factorization.

30012210251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 30012210251 its reverse (15201221003), we get a palindrome (45213431254).

The spelling of 30012210251 in words is "thirty billion, twelve million, two hundred ten thousand, two hundred fifty-one".