211200987233 has 2 divisors, whose sum is σ = 211200987234. Its totient is φ = 211200987232.

The previous prime is 211200987187. The next prime is 211200987241. The reversal of 211200987233 is 332789002112.

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., 123402556369 + 87798430864 = 351287^2 + 296308^2 .

It is a cyclic number.

It is not a de Polignac number, because 211200987233 - 2¹⁶ = 211200921697 is a prime.

It is not a weakly prime, because it can be changed into another prime (211200987133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105600493616 + 105600493617.

It is an arithmetic number, because the mean of its divisors is an integer number (105600493617).

Almost surely, 2^211200987233 is an apocalyptic number.

It is an amenable number.

211200987233 is a deficient number, since it is larger than the sum of its proper divisors (1).

211200987233 is an equidigital number, since it uses as much as digits as its factorization.

211200987233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

Adding to 211200987233 its reverse (332789002112), we get a palindrome (543989989345).

The spelling of 211200987233 in words is "two hundred eleven billion, two hundred million, nine hundred eighty-seven thousand, two hundred thirty-three".