201044443421 has 4 divisors (see below), whose sum is σ = 201328004700. Its totient is φ = 200760882144.

The previous prime is 201044443387. The next prime is 201044443429. The reversal of 201044443421 is 124344440102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126583677796 + 74460765625 = 355786^2 + 272875^2 .

It is a cyclic number.

It is not a de Polignac number, because 201044443421 - 2¹⁴ = 201044427037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044443429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141779576 + ... + 141780993.

It is an arithmetic number, because the mean of its divisors is an integer number (50332001175).

Almost surely, 2^201044443421 is an apocalyptic number.

It is an amenable number.

201044443421 is a deficient number, since it is larger than the sum of its proper divisors (283561279).

201044443421 is an equidigital number, since it uses as much as digits as its factorization.

201044443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283561278.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 201044443421 its reverse (124344440102), we get a palindrome (325388883523).

The spelling of 201044443421 in words is "two hundred one billion, forty-four million, four hundred forty-three thousand, four hundred twenty-one".