213011012237 has 2 divisors, whose sum is σ = 213011012238. Its totient is φ = 213011012236.

The previous prime is 213011012209. The next prime is 213011012239. The reversal of 213011012237 is 732210110312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182311066441 + 30699945796 = 426979^2 + 175214^2 .

It is a cyclic number.

It is not a de Polignac number, because 213011012237 - 2⁶ = 213011012173 is a prime.

Together with 213011012239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213011012239) 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, 106505506118 + 106505506119.

It is an arithmetic number, because the mean of its divisors is an integer number (106505506119).

Almost surely, 2^213011012237 is an apocalyptic number.

It is an amenable number.

213011012237 is a deficient number, since it is larger than the sum of its proper divisors (1).

213011012237 is an equidigital number, since it uses as much as digits as its factorization.

213011012237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 213011012237 its reverse (732210110312), we get a palindrome (945221122549).

The spelling of 213011012237 in words is "two hundred thirteen billion, eleven million, twelve thousand, two hundred thirty-seven".