213668121350 has 12 divisors (see below), whose sum is σ = 397422705804. Its totient is φ = 85467248520.

The previous prime is 213668121301. The next prime is 213668121353. The reversal of 213668121350 is 53121866312.

It is a happy number.

213668121350 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213668121353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2136681164 + ... + 2136681263.

It is an arithmetic number, because the mean of its divisors is an integer number (33118558817).

Almost surely, 2^213668121350 is an apocalyptic number.

213668121350 is a deficient number, since it is larger than the sum of its proper divisors (183754584454).

213668121350 is a wasteful number, since it uses less digits than its factorization.

213668121350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273362439 (or 4273362434 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 213668121350 its reverse (53121866312), we get a palindrome (266789987662).

The spelling of 213668121350 in words is "two hundred thirteen billion, six hundred sixty-eight million, one hundred twenty-one thousand, three hundred fifty".