213334412237 has 2 divisors, whose sum is σ = 213334412238. Its totient is φ = 213334412236.

The previous prime is 213334412233. The next prime is 213334412327. The reversal of 213334412237 is 732214433312.

Together with next prime (213334412327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187678701961 + 25655710276 = 433219^2 + 160174^2 .

It is a cyclic number.

It is not a de Polignac number, because 213334412237 - 2² = 213334412233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213334412197 and 213334412206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213334412231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106667206118 + 106667206119.

It is an arithmetic number, because the mean of its divisors is an integer number (106667206119).

Almost surely, 2^213334412237 is an apocalyptic number.

It is an amenable number.

213334412237 is a deficient number, since it is larger than the sum of its proper divisors (1).

213334412237 is an equidigital number, since it uses as much as digits as its factorization.

213334412237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 35.

Adding to 213334412237 its reverse (732214433312), we get a palindrome (945548845549).

The spelling of 213334412237 in words is "two hundred thirteen billion, three hundred thirty-four million, four hundred twelve thousand, two hundred thirty-seven".