213222303121 has 8 divisors (see below), whose sum is σ = 213725505960. Its totient is φ = 212719532928.

The previous prime is 213222303067. The next prime is 213222303131. The reversal of 213222303121 is 121303222312.

It can be written as a sum of positive squares in 4 ways, for example, as 29297114896 + 183925188225 = 171164^2 + 428865^2 .

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 213222303121 - 2¹⁵ = 213222270353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213222303092 and 213222303101.

It is not an unprimeable number, because it can be changed into a prime (213222303131) 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, 889485 + ... + 1103461.

It is an arithmetic number, because the mean of its divisors is an integer number (26715688245).

Almost surely, 2^213222303121 is an apocalyptic number.

It is an amenable number.

213222303121 is a deficient number, since it is larger than the sum of its proper divisors (503202839).

213222303121 is a wasteful number, since it uses less digits than its factorization.

213222303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216323.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213222303121 its reverse (121303222312), we get a palindrome (334525525433).

The spelling of 213222303121 in words is "two hundred thirteen billion, two hundred twenty-two million, three hundred three thousand, one hundred twenty-one".