44121031421 has 4 divisors (see below), whose sum is σ = 44147468700. Its totient is φ = 44094594144.

The previous prime is 44121031349. The next prime is 44121031453. The reversal of 44121031421 is 12413012144.

44121031421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12873398521 + 31247632900 = 113461^2 + 176770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44121031421 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 (44121039421) 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, 13216136 + ... + 13219473.

It is an arithmetic number, because the mean of its divisors is an integer number (11036867175).

Almost surely, 2^44121031421 is an apocalyptic number.

It is an amenable number.

44121031421 is a deficient number, since it is larger than the sum of its proper divisors (26437279).

44121031421 is a wasteful number, since it uses less digits than its factorization.

44121031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26437278.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 44121031421 its reverse (12413012144), we get a palindrome (56534043565).

The spelling of 44121031421 in words is "forty-four billion, one hundred twenty-one million, thirty-one thousand, four hundred twenty-one".