1213202330209 has 4 divisors (see below), whose sum is σ = 1252337889280. Its totient is φ = 1174066771140.

The previous prime is 1213202330141. The next prime is 1213202330227. The reversal of 1213202330209 is 9020332023121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1213202330209 - 2²³ = 1213193941601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213202330279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19567779489 + ... + 19567779550.

It is an arithmetic number, because the mean of its divisors is an integer number (313084472320).

Almost surely, 2^{1213202330209} is an apocalyptic number.

It is an amenable number.

1213202330209 is a deficient number, since it is larger than the sum of its proper divisors (39135559071).

1213202330209 is an equidigital number, since it uses as much as digits as its factorization.

1213202330209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39135559070.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 1213202330209 in words is "one trillion, two hundred thirteen billion, two hundred two million, three hundred thirty thousand, two hundred nine".