16120221324 has 96 divisors (see below), whose sum is σ = 40348729344. Its totient is φ = 4996918080.

The previous prime is 16120221259. The next prime is 16120221349. The reversal of 16120221324 is 42312202161.

It is a junction number, because it is equal to n+sod(n) for n = 16120221294 and 16120221303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2643519 + ... + 2649609.

It is an arithmetic number, because the mean of its divisors is an integer number (420299264).

Almost surely, 2^16120221324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16120221324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20174364672).

16120221324 is an abundant number, since it is smaller than the sum of its proper divisors (24228508020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16120221324 is a wasteful number, since it uses less digits than its factorization.

16120221324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6387 (or 6385 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 16120221324 its reverse (42312202161), we get a palindrome (58432423485).

The spelling of 16120221324 in words is "sixteen billion, one hundred twenty million, two hundred twenty-one thousand, three hundred twenty-four".