44421010421 has 4 divisors (see below), whose sum is σ = 47034011052. Its totient is φ = 41808009792.

The previous prime is 44421010411. The next prime is 44421010429. The reversal of 44421010421 is 12401012444.

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 36762310225 + 7658700196 = 191735^2 + 87514^2 .

It is a cyclic number.

It is not a de Polignac number, because 44421010421 - 2³⁴ = 27241141237 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 (44421010429) 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, 1306500290 + ... + 1306500323.

It is an arithmetic number, because the mean of its divisors is an integer number (11758502763).

Almost surely, 2^44421010421 is an apocalyptic number.

It is an amenable number.

44421010421 is a deficient number, since it is larger than the sum of its proper divisors (2613000631).

44421010421 is a wasteful number, since it uses less digits than its factorization.

44421010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613000630.

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

Adding to 44421010421 its reverse (12401012444), we get a palindrome (56822022865).

The spelling of 44421010421 in words is "forty-four billion, four hundred twenty-one million, ten thousand, four hundred twenty-one".