2211340421 has 2 divisors, whose sum is σ = 2211340422. Its totient is φ = 2211340420.

The previous prime is 2211340387. The next prime is 2211340457. The reversal of 2211340421 is 1240431122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1556697025 + 654643396 = 39455^2 + 25586^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211340421 - 2⁶ = 2211340357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211340393 and 2211340402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211340471) 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, 1105670210 + 1105670211.

It is an arithmetic number, because the mean of its divisors is an integer number (1105670211).

Almost surely, 2^2211340421 is an apocalyptic number.

It is an amenable number.

2211340421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211340421 is an equidigital number, since it uses as much as digits as its factorization.

2211340421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2211340421 is about 47024.8915043937. The cubic root of 2211340421 is about 1302.8223535243.

Adding to 2211340421 its reverse (1240431122), we get a palindrome (3451771543).

The spelling of 2211340421 in words is "two billion, two hundred eleven million, three hundred forty thousand, four hundred twenty-one".