44021331321 has 64 divisors (see below), whose sum is σ = 69038936064. Its totient is φ = 24683859200.

The previous prime is 44021331283. The next prime is 44021331331. The reversal of 44021331321 is 12313312044.

It is a happy number.

It is not a de Polignac number, because 44021331321 - 2⁶ = 44021331257 is a prime.

It is a super-2 number, since 2×44021331321² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44021331291 and 44021331300.

It is not an unprimeable number, because it can be changed into a prime (44021331331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2848411 + ... + 2863823.

It is an arithmetic number, because the mean of its divisors is an integer number (1078733376).

Almost surely, 2^44021331321 is an apocalyptic number.

It is an amenable number.

44021331321 is a deficient number, since it is larger than the sum of its proper divisors (25017604743).

44021331321 is a wasteful number, since it uses less digits than its factorization.

44021331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15574.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 44021331321 its reverse (12313312044), we get a palindrome (56334643365).

The spelling of 44021331321 in words is "forty-four billion, twenty-one million, three hundred thirty-one thousand, three hundred twenty-one".