201213434237 has 2 divisors, whose sum is σ = 201213434238. Its totient is φ = 201213434236.

The previous prime is 201213434203. The next prime is 201213434297. The reversal of 201213434237 is 732434312102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189672444196 + 11540990041 = 435514^2 + 107429^2 .

It is a cyclic number.

It is not a de Polignac number, because 201213434237 - 2¹⁸ = 201213172093 is a prime.

It is a super-2 number, since 2×201213434237² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201213434297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606717118 + 100606717119.

It is an arithmetic number, because the mean of its divisors is an integer number (100606717119).

Almost surely, 2^201213434237 is an apocalyptic number.

It is an amenable number.

201213434237 is a deficient number, since it is larger than the sum of its proper divisors (1).

201213434237 is an equidigital number, since it uses as much as digits as its factorization.

201213434237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 32.

Adding to 201213434237 its reverse (732434312102), we get a palindrome (933647746339).

The spelling of 201213434237 in words is "two hundred one billion, two hundred thirteen million, four hundred thirty-four thousand, two hundred thirty-seven".