1211330213 has 8 divisors (see below), whose sum is σ = 1270619136. Its totient is φ = 1152593200.

The previous prime is 1211330171. The next prime is 1211330221. The reversal of 1211330213 is 3120331121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211330213 - 2⁶ = 1211330149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211330191 and 1211330200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211330243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133478 + ... + 142263.

It is an arithmetic number, because the mean of its divisors is an integer number (158827392).

Almost surely, 2^1211330213 is an apocalyptic number.

It is an amenable number.

1211330213 is a deficient number, since it is larger than the sum of its proper divisors (59288923).

1211330213 is a wasteful number, since it uses less digits than its factorization.

1211330213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275955.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1211330213 is about 34804.1694772336. The cubic root of 1211330213 is about 1065.9925835519.

Adding to 1211330213 its reverse (3120331121), we get a palindrome (4331661334).

The spelling of 1211330213 in words is "one billion, two hundred eleven million, three hundred thirty thousand, two hundred thirteen".