2212110421 has 2 divisors, whose sum is σ = 2212110422. Its totient is φ = 2212110420.

The previous prime is 2212110377. The next prime is 2212110427. The reversal of 2212110421 is 1240112122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1282714225 + 929396196 = 35815^2 + 30486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212110421 - 2¹¹ = 2212108373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212110395 and 2212110404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212110427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106055210 + 1106055211.

It is an arithmetic number, because the mean of its divisors is an integer number (1106055211).

Almost surely, 2^2212110421 is an apocalyptic number.

It is an amenable number.

2212110421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212110421 is an equidigital number, since it uses as much as digits as its factorization.

2212110421 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.

The square root of 2212110421 is about 47033.0779452079. The cubic root of 2212110421 is about 1302.9735524365.

Adding to 2212110421 its reverse (1240112122), we get a palindrome (3452222543).

The spelling of 2212110421 in words is "two billion, two hundred twelve million, one hundred ten thousand, four hundred twenty-one".