4414421435621 has 2 divisors, whose sum is σ = 4414421435622. Its totient is φ = 4414421435620.

The previous prime is 4414421435609. The next prime is 4414421435657. The reversal of 4414421435621 is 1265341244144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3640135831396 + 774285604225 = 1907914^2 + 879935^2 .

It is a cyclic number.

It is not a de Polignac number, because 4414421435621 - 2¹⁰ = 4414421434597 is a prime.

It is a super-2 number, since 2×4414421435621² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4414421435321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2207210717810 + 2207210717811.

It is an arithmetic number, because the mean of its divisors is an integer number (2207210717811).

Almost surely, 2^{4414421435621} is an apocalyptic number.

It is an amenable number.

4414421435621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4414421435621 is an equidigital number, since it uses as much as digits as its factorization.

4414421435621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640, while the sum is 41.

Adding to 4414421435621 its reverse (1265341244144), we get a palindrome (5679762679765).

The spelling of 4414421435621 in words is "four trillion, four hundred fourteen billion, four hundred twenty-one million, four hundred thirty-five thousand, six hundred twenty-one".