2210203421 has 2 divisors, whose sum is σ = 2210203422. Its totient is φ = 2210203420.

The previous prime is 2210203381. The next prime is 2210203451. The reversal of 2210203421 is 1243020122.

2210203421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2202424900 + 7778521 = 46930^2 + 2789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210203421 - 2⁶ = 2210203357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2210203421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210203451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105101710 + 1105101711.

It is an arithmetic number, because the mean of its divisors is an integer number (1105101711).

Almost surely, 2^2210203421 is an apocalyptic number.

It is an amenable number.

2210203421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210203421 is an equidigital number, since it uses as much as digits as its factorization.

2210203421 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 17.

The square root of 2210203421 is about 47012.8006079195. The cubic root of 2210203421 is about 1302.5990254839.

Adding to 2210203421 its reverse (1243020122), we get a palindrome (3453223543).

The spelling of 2210203421 in words is "two billion, two hundred ten million, two hundred three thousand, four hundred twenty-one".