1010220251 has 2 divisors, whose sum is σ = 1010220252. Its totient is φ = 1010220250.

The previous prime is 1010220247. The next prime is 1010220269. The reversal of 1010220251 is 1520220101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1010220251 - 2² = 1010220247 is a prime.

It is not a weakly prime, because it can be changed into another prime (1010220271) 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, 505110125 + 505110126.

It is an arithmetic number, because the mean of its divisors is an integer number (505110126).

Almost surely, 2^1010220251 is an apocalyptic number.

1010220251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010220251 is an equidigital number, since it uses as much as digits as its factorization.

1010220251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1010220251 is about 31783.9621664764. The cubic root of 1010220251 is about 1003.3952098375.

Adding to 1010220251 its reverse (1520220101), we get a palindrome (2530440352).

The spelling of 1010220251 in words is "one billion, ten million, two hundred twenty thousand, two hundred fifty-one".