2011421441 has 2 divisors, whose sum is σ = 2011421442. Its totient is φ = 2011421440.

The previous prime is 2011421431. The next prime is 2011421443. The reversal of 2011421441 is 1441241102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1422873841 + 588547600 = 37721^2 + 24260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011421441 is a prime.

Together with 2011421443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2011421443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005710720 + 1005710721.

It is an arithmetic number, because the mean of its divisors is an integer number (1005710721).

Almost surely, 2^2011421441 is an apocalyptic number.

It is an amenable number.

2011421441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011421441 is an equidigital number, since it uses as much as digits as its factorization.

2011421441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 2011421441 is about 44848.8733526273. The cubic root of 2011421441 is about 1262.3148512071.

Adding to 2011421441 its reverse (1441241102), we get a palindrome (3452662543).

The spelling of 2011421441 in words is "two billion, eleven million, four hundred twenty-one thousand, four hundred forty-one".