4122144421 has 2 divisors, whose sum is σ = 4122144422. Its totient is φ = 4122144420.

The previous prime is 4122144409. The next prime is 4122144437. The reversal of 4122144421 is 1244412214.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2630253796 + 1491890625 = 51286^2 + 38625^2 .

It is a cyclic number.

It is not a de Polignac number, because 4122144421 - 2⁷ = 4122144293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4122144721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061072210 + 2061072211.

It is an arithmetic number, because the mean of its divisors is an integer number (2061072211).

Almost surely, 2^4122144421 is an apocalyptic number.

It is an amenable number.

4122144421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4122144421 is an equidigital number, since it uses as much as digits as its factorization.

4122144421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2048, while the sum is 25.

The square root of 4122144421 is about 64203.9283922721. The cubic root of 4122144421 is about 1603.3970041071.

Adding to 4122144421 its reverse (1244412214), we get a palindrome (5366556635).

The spelling of 4122144421 in words is "four billion, one hundred twenty-two million, one hundred forty-four thousand, four hundred twenty-one".