1001112251 has 2 divisors, whose sum is σ = 1001112252. Its totient is φ = 1001112250.

The previous prime is 1001112241. The next prime is 1001112271. The reversal of 1001112251 is 1522111001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001112251 - 2¹⁴ = 1001095867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001112241) 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, 500556125 + 500556126.

It is an arithmetic number, because the mean of its divisors is an integer number (500556126).

Almost surely, 2^1001112251 is an apocalyptic number.

1001112251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001112251 is an equidigital number, since it uses as much as digits as its factorization.

1001112251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 1001112251 is about 31640.3579467742. The cubic root of 1001112251 is about 1000.3706129624.

Adding to 1001112251 its reverse (1522111001), we get a palindrome (2523223252).

The spelling of 1001112251 in words is "one billion, one million, one hundred twelve thousand, two hundred fifty-one".