20211331332 has 48 divisors (see below), whose sum is σ = 47766704832. Its totient is φ = 6650941440.

The previous prime is 20211331313. The next prime is 20211331337. The reversal of 20211331332 is 23313311202.

It is a junction number, because it is equal to n+sod(n) for n = 20211331299 and 20211331308.

It is not an unprimeable number, because it can be changed into a prime (20211331337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270088 + ... + 336704.

It is an arithmetic number, because the mean of its divisors is an integer number (995139684).

Almost surely, 2^20211331332 is an apocalyptic number.

It is an amenable number.

20211331332 is an abundant number, since it is smaller than the sum of its proper divisors (27555373500).

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

20211331332 is a wasteful number, since it uses less digits than its factorization.

20211331332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66948 (or 66946 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20211331332 its reverse (23313311202), we get a palindrome (43524642534).

The spelling of 20211331332 in words is "twenty billion, two hundred eleven million, three hundred thirty-one thousand, three hundred thirty-two".