2110221200221 has 2 divisors, whose sum is σ = 2110221200222. Its totient is φ = 2110221200220.

The previous prime is 2110221200183. The next prime is 2110221200267. The reversal of 2110221200221 is 1220021220112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1531997832121 + 578223368100 = 1237739^2 + 760410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110221200221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2110221200195 and 2110221200204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110221200621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055110600110 + 1055110600111.

It is an arithmetic number, because the mean of its divisors is an integer number (1055110600111).

Almost surely, 2^{2110221200221} is an apocalyptic number.

It is an amenable number.

2110221200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110221200221 is an equidigital number, since it uses as much as digits as its factorization.

2110221200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2110221200221 its reverse (1220021220112), we get a palindrome (3330242420333).

The spelling of 2110221200221 in words is "two trillion, one hundred ten billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".