1210804213 has 2 divisors, whose sum is σ = 1210804214. Its totient is φ = 1210804212.

The previous prime is 1210804183. The next prime is 1210804297. The reversal of 1210804213 is 3124080121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 806673604 + 404130609 = 28402^2 + 20103^2 .

It is an emirp because it is prime and its reverse (3124080121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1210804213 - 2²¹ = 1208707061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210804813) 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, 605402106 + 605402107.

It is an arithmetic number, because the mean of its divisors is an integer number (605402107).

Almost surely, 2^1210804213 is an apocalyptic number.

It is an amenable number.

1210804213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210804213 is an equidigital number, since it uses as much as digits as its factorization.

1210804213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1210804213 is about 34796.6120908344. The cubic root of 1210804213 is about 1065.8382646958.

Adding to 1210804213 its reverse (3124080121), we get a palindrome (4334884334).

The spelling of 1210804213 in words is "one billion, two hundred ten million, eight hundred four thousand, two hundred thirteen".