20211330132 has 144 divisors (see below), whose sum is σ = 61163182080. Its totient is φ = 5502176064.

The previous prime is 20211330071. The next prime is 20211330149. The reversal of 20211330132 is 23103311202.

20211330132 is a `hidden beast` number, since 202 + 1 + 1 + 330 + 132 = 666.

It is a super-2 number, since 2×20211330132² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1517719 + ... + 1530977.

It is an arithmetic number, because the mean of its divisors is an integer number (424744320).

Almost surely, 2^20211330132 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 20211330132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30581591040).

20211330132 is an abundant number, since it is smaller than the sum of its proper divisors (40951851948).

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

20211330132 is a wasteful number, since it uses less digits than its factorization.

20211330132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13562 (or 13557 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20211330132 its reverse (23103311202), we get a palindrome (43314641334).

The spelling of 20211330132 in words is "twenty billion, two hundred eleven million, three hundred thirty thousand, one hundred thirty-two".