651112213 has 2 divisors, whose sum is σ = 651112214. Its totient is φ = 651112212.

The previous prime is 651112211. The next prime is 651112219. The reversal of 651112213 is 312211156.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545783044 + 105329169 = 23362^2 + 10263^2 .

It is a cyclic number.

It is not a de Polignac number, because 651112213 - 2¹ = 651112211 is a prime.

It is a super-2 number, since 2×651112213² = 847894227835514738, which contains 22 as substring.

Together with 651112211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651112211) 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, 325556106 + 325556107.

It is an arithmetic number, because the mean of its divisors is an integer number (325556107).

Almost surely, 2^651112213 is an apocalyptic number.

It is an amenable number.

651112213 is a deficient number, since it is larger than the sum of its proper divisors (1).

651112213 is an equidigital number, since it uses as much as digits as its factorization.

651112213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 22.

The square root of 651112213 is about 25516.9005367031. The cubic root of 651112213 is about 866.7328968288.

Adding to 651112213 its reverse (312211156), we get a palindrome (963323369).

The spelling of 651112213 in words is "six hundred fifty-one million, one hundred twelve thousand, two hundred thirteen".