2212201210321 has 16 divisors (see below), whose sum is σ = 2268823329360. Its totient is φ = 2155707473920.

The previous prime is 2212201210313. The next prime is 2212201210339. The reversal of 2212201210321 is 1230121022122.

It can be written as a sum of positive squares in 8 ways, for example, as 125837629696 + 2086363580625 = 354736^2 + 1444425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212201210321 - 2³ = 2212201210313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212201220321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164237175 + ... + 164250643.

It is an arithmetic number, because the mean of its divisors is an integer number (141801458085).

Almost surely, 2^{2212201210321} is an apocalyptic number.

It is an amenable number.

2212201210321 is a deficient number, since it is larger than the sum of its proper divisors (56622119039).

2212201210321 is a wasteful number, since it uses less digits than its factorization.

2212201210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17924.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2212201210321 its reverse (1230121022122), we get a palindrome (3442322232443).

The spelling of 2212201210321 in words is "two trillion, two hundred twelve billion, two hundred one million, two hundred ten thousand, three hundred twenty-one".