2212131200221 has 2 divisors, whose sum is σ = 2212131200222. Its totient is φ = 2212131200220.

The previous prime is 2212131200203. The next prime is 2212131200273. The reversal of 2212131200221 is 1220021312122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1622721847321 + 589409352900 = 1273861^2 + 767730^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212131200221 - 2⁷ = 2212131200093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212131200621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106065600110 + 1106065600111.

It is an arithmetic number, because the mean of its divisors is an integer number (1106065600111).

Almost surely, 2^{2212131200221} is an apocalyptic number.

It is an amenable number.

2212131200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212131200221 is an equidigital number, since it uses as much as digits as its factorization.

2212131200221 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 2212131200221 its reverse (1220021312122), we get a palindrome (3432152512343).

The spelling of 2212131200221 in words is "two trillion, two hundred twelve billion, one hundred thirty-one million, two hundred thousand, two hundred twenty-one".