2130112220221 has 2 divisors, whose sum is σ = 2130112220222. Its totient is φ = 2130112220220.

The previous prime is 2130112220213. The next prime is 2130112220251. The reversal of 2130112220221 is 1220222110312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1999364892121 + 130747328100 = 1413989^2 + 361590^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130112220221 - 2³ = 2130112220213 is a prime.

It is a super-4 number, since 4×2130112220221⁴ (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130112220251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065056110110 + 1065056110111.

It is an arithmetic number, because the mean of its divisors is an integer number (1065056110111).

Almost surely, 2^{2130112220221} is an apocalyptic number.

It is an amenable number.

2130112220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130112220221 is an equidigital number, since it uses as much as digits as its factorization.

2130112220221 is an evil number, because the sum of its binary digits is even.

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

Adding to 2130112220221 its reverse (1220222110312), we get a palindrome (3350334330533).

The spelling of 2130112220221 in words is "two trillion, one hundred thirty billion, one hundred twelve million, two hundred twenty thousand, two hundred twenty-one".