44216120721 has 4 divisors (see below), whose sum is σ = 58954827632. Its totient is φ = 29477413812.

The previous prime is 44216120719. The next prime is 44216120723. The reversal of 44216120721 is 12702161244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (44216120719) and next prime (44216120723).

It is not a de Polignac number, because 44216120721 - 2¹ = 44216120719 is a prime.

It is a super-2 number, since 2×44216120721² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44216120723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7369353451 + ... + 7369353456.

It is an arithmetic number, because the mean of its divisors is an integer number (14738706908).

Almost surely, 2^44216120721 is an apocalyptic number.

It is an amenable number.

44216120721 is a deficient number, since it is larger than the sum of its proper divisors (14738706911).

44216120721 is a wasteful number, since it uses less digits than its factorization.

44216120721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14738706910.

The product of its (nonzero) digits is 5376, while the sum is 30.

Adding to 44216120721 its reverse (12702161244), we get a palindrome (56918281965).

The spelling of 44216120721 in words is "forty-four billion, two hundred sixteen million, one hundred twenty thousand, seven hundred twenty-one".