211204103213 has 2 divisors, whose sum is σ = 211204103214. Its totient is φ = 211204103212.

The previous prime is 211204103153. The next prime is 211204103221. The reversal of 211204103213 is 312301402112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123399746089 + 87804357124 = 351283^2 + 296318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211204103213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211204103813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105602051606 + 105602051607.

It is an arithmetic number, because the mean of its divisors is an integer number (105602051607).

Almost surely, 2^211204103213 is an apocalyptic number.

It is an amenable number.

211204103213 is a deficient number, since it is larger than the sum of its proper divisors (1).

211204103213 is an equidigital number, since it uses as much as digits as its factorization.

211204103213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211204103213 its reverse (312301402112), we get a palindrome (523505505325).

The spelling of 211204103213 in words is "two hundred eleven billion, two hundred four million, one hundred three thousand, two hundred thirteen".