20121330000 has 100 divisors (see below), whose sum is σ = 64954432928. Its totient is φ = 5365680000.

The previous prime is 20121329981. The next prime is 20121330013. The reversal of 20121330000 is 3312102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 305356 + ... + 365355.

Almost surely, 2^20121330000 is an apocalyptic number.

20121330000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121330000 is an abundant number, since it is smaller than the sum of its proper divisors (44833102928).

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

20121330000 is an equidigital number, since it uses as much as digits as its factorization.

20121330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670742 (or 670721 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20121330000 its reverse (3312102), we get a palindrome (20124642102).

The spelling of 20121330000 in words is "twenty billion, one hundred twenty-one million, three hundred thirty thousand".