16021211052 has 96 divisors (see below), whose sum is σ = 47068890624. Its totient is φ = 4120128000.

The previous prime is 16021211033. The next prime is 16021211081. The reversal of 16021211052 is 25011212061.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7488 + ... + 179160.

It is an arithmetic number, because the mean of its divisors is an integer number (490300944).

Almost surely, 2^16021211052 is an apocalyptic number.

16021211052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16021211052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23534445312).

16021211052 is an abundant number, since it is smaller than the sum of its proper divisors (31047679572).

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

16021211052 is a wasteful number, since it uses less digits than its factorization.

16021211052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171799 (or 171797 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

It can be divided in two parts, 160 and 21211052, that added together give a palindrome (21211212).

The spelling of 16021211052 in words is "sixteen billion, twenty-one million, two hundred eleven thousand, fifty-two".