1000212251 has 2 divisors, whose sum is σ = 1000212252. Its totient is φ = 1000212250.

The previous prime is 1000212229. The next prime is 1000212253. The reversal of 1000212251 is 1522120001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000212251 - 2¹⁰ = 1000211227 is a prime.

Together with 1000212253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1000212253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500106125 + 500106126.

It is an arithmetic number, because the mean of its divisors is an integer number (500106126).

Almost surely, 2^1000212251 is an apocalyptic number.

1000212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000212251 is an equidigital number, since it uses as much as digits as its factorization.

1000212251 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 1000212251 is about 31626.1324066032. The cubic root of 1000212251 is about 1000.0707453283.

Adding to 1000212251 its reverse (1522120001), we get a palindrome (2522332252).

The spelling of 1000212251 in words is "one billion, two hundred twelve thousand, two hundred fifty-one".