2130322311221 has 8 divisors (see below), whose sum is σ = 2294222739480. Its totient is φ = 1966426094592.

The previous prime is 2130322311199. The next prime is 2130322311223. The reversal of 2130322311221 is 1221132230312.

It can be written as a sum of positive squares in 4 ways, for example, as 5403867121 + 2124918444100 = 73511^2 + 1457710^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130322311221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130322311223) 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, 39641 + ... + 2064513.

It is an arithmetic number, because the mean of its divisors is an integer number (286777842435).

Almost surely, 2^{2130322311221} is an apocalyptic number.

It is an amenable number.

2130322311221 is a deficient number, since it is larger than the sum of its proper divisors (163900428259).

2130322311221 is a wasteful number, since it uses less digits than its factorization.

2130322311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105815.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2130322311221 its reverse (1221132230312), we get a palindrome (3351454541533).

The spelling of 2130322311221 in words is "two trillion, one hundred thirty billion, three hundred twenty-two million, three hundred eleven thousand, two hundred twenty-one".