44221422421 has 12 divisors (see below), whose sum is σ = 48612142656. Its totient is φ = 40197054920.

The previous prime is 44221422409. The next prime is 44221422437. The reversal of 44221422421 is 12422412244.

It is a happy number.

It is not a de Polignac number, because 44221422421 - 2⁷ = 44221422293 is a prime.

It is a super-3 number, since 3×44221422421³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 44221422421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44221432421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2032020 + ... + 2053666.

It is an arithmetic number, because the mean of its divisors is an integer number (4051011888).

Almost surely, 2^44221422421 is an apocalyptic number.

It is an amenable number.

44221422421 is a deficient number, since it is larger than the sum of its proper divisors (4390720235).

44221422421 is a wasteful number, since it uses less digits than its factorization.

44221422421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38552 (or 38541 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

Adding to 44221422421 its reverse (12422412244), we get a palindrome (56643834665).

The spelling of 44221422421 in words is "forty-four billion, two hundred twenty-one million, four hundred twenty-two thousand, four hundred twenty-one".