213223020321 has 8 divisors (see below), whose sum is σ = 291981073024. Its totient is φ = 138306823920.

The previous prime is 213223020281. The next prime is 213223020341. The reversal of 213223020321 is 123020322312.

It is a happy number.

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

It is not a de Polignac number, because 213223020321 - 2¹⁰ = 213223019297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213223020341) 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, 960463945 + ... + 960464166.

It is an arithmetic number, because the mean of its divisors is an integer number (36497634128).

Almost surely, 2^213223020321 is an apocalyptic number.

It is an amenable number.

213223020321 is a deficient number, since it is larger than the sum of its proper divisors (78758052703).

213223020321 is a wasteful number, since it uses less digits than its factorization.

213223020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920928151.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 213223020321 its reverse (123020322312), we get a palindrome (336243342633).

The spelling of 213223020321 in words is "two hundred thirteen billion, two hundred twenty-three million, twenty thousand, three hundred twenty-one".