2212321321321 has 16 divisors (see below), whose sum is σ = 2350192684176. Its totient is φ = 2075311323136.

The previous prime is 2212321321267. The next prime is 2212321321337. The reversal of 2212321321321 is 1231231232122.

It can be written as a sum of positive squares in 8 ways, for example, as 554250470400 + 1658070850921 = 744480^2 + 1287661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212321321321 - 2¹³ = 2212321313129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212321321421) 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, 42099555 + ... + 42152071.

It is an arithmetic number, because the mean of its divisors is an integer number (146887042761).

Almost surely, 2^{2212321321321} is an apocalyptic number.

It is an amenable number.

2212321321321 is a deficient number, since it is larger than the sum of its proper divisors (137871362855).

2212321321321 is a wasteful number, since it uses less digits than its factorization.

2212321321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60668.

The product of its digits is 1728, while the sum is 25.

Adding to 2212321321321 its reverse (1231231232122), we get a palindrome (3443552553443).

The spelling of 2212321321321 in words is "two trillion, two hundred twelve billion, three hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-one".