2212134581 has 2 divisors, whose sum is σ = 2212134582. Its totient is φ = 2212134580.

The previous prime is 2212134539. The next prime is 2212134583. The reversal of 2212134581 is 1854312122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1410678481 + 801456100 = 37559^2 + 28310^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212134581 - 2⁶ = 2212134517 is a prime.

It is a super-2 number, since 2×2212134581² = 9787078808912091122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2212134583, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212134583) 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, 1106067290 + 1106067291.

It is an arithmetic number, because the mean of its divisors is an integer number (1106067291).

Almost surely, 2^2212134581 is an apocalyptic number.

It is an amenable number.

2212134581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212134581 is an equidigital number, since it uses as much as digits as its factorization.

2212134581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 29.

The square root of 2212134581 is about 47033.3347850224. The cubic root of 2212134581 is about 1302.9782959800.

The spelling of 2212134581 in words is "two billion, two hundred twelve million, one hundred thirty-four thousand, five hundred eighty-one".