20330132100 has 72 divisors (see below), whose sum is σ = 58961934528. Its totient is φ = 5408457600.

The previous prime is 20330132089. The next prime is 20330132111. The reversal of 20330132100 is 123103302.

It is an interprime number because it is at equal distance from previous prime (20330132089) and next prime (20330132111).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20330132100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45817 + ... + 206783.

Almost surely, 2^20330132100 is an apocalyptic number.

20330132100 is a gapful number since it is divisible by the number (20) 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 20330132100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29480967264).

20330132100 is an abundant number, since it is smaller than the sum of its proper divisors (38631802428).

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

20330132100 is a wasteful number, since it uses less digits than its factorization.

20330132100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161405 (or 161398 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20330132100 its reverse (123103302), we get a palindrome (20453235402).

The spelling of 20330132100 in words is "twenty billion, three hundred thirty million, one hundred thirty-two thousand, one hundred".