2144041421 has 2 divisors, whose sum is σ = 2144041422. Its totient is φ = 2144041420.

The previous prime is 2144041409. The next prime is 2144041451. The reversal of 2144041421 is 1241404412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2135456521 + 8584900 = 46211^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144041421 - 2¹⁸ = 2143779277 is a prime.

It is a super-2 number, since 2×2144041421² = 9193827229927398482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144041451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072020710 + 1072020711.

It is an arithmetic number, because the mean of its divisors is an integer number (1072020711).

Almost surely, 2^2144041421 is an apocalyptic number.

It is an amenable number.

2144041421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144041421 is an equidigital number, since it uses as much as digits as its factorization.

2144041421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 2144041421 is about 46303.7948876763. The cubic root of 2144041421 is about 1289.4694493132.

Adding to 2144041421 its reverse (1241404412), we get a palindrome (3385445833).

The spelling of 2144041421 in words is "two billion, one hundred forty-four million, forty-one thousand, four hundred twenty-one".