213222100321 has 8 divisors (see below), whose sum is σ = 213345560384. Its totient is φ = 213098681520.

The previous prime is 213222100237. The next prime is 213222100331. The reversal of 213222100321 is 123001222312.

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 213222100321 - 2¹³ = 213222092129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213222100331) 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, 18491860 + ... + 18503386.

It is an arithmetic number, because the mean of its divisors is an integer number (26668195048).

Almost surely, 2^213222100321 is an apocalyptic number.

It is an amenable number.

213222100321 is a deficient number, since it is larger than the sum of its proper divisors (123460063).

213222100321 is a wasteful number, since it uses less digits than its factorization.

213222100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20631.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 213222100321 its reverse (123001222312), we get a palindrome (336223322633).

The spelling of 213222100321 in words is "two hundred thirteen billion, two hundred twenty-two million, one hundred thousand, three hundred twenty-one".