20321130012 has 48 divisors (see below), whose sum is σ = 48138320160. Its totient is φ = 6670798848.

The previous prime is 20321130001. The next prime is 20321130091. The reversal of 20321130012 is 21003112302.

It is a junction number, because it is equal to n+sod(n) for n = 20321129973 and 20321130000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572314 + ... + 606782.

It is an arithmetic number, because the mean of its divisors is an integer number (1002881670).

Almost surely, 2^20321130012 is an apocalyptic number.

It is an amenable number.

20321130012 is an abundant number, since it is smaller than the sum of its proper divisors (27817190148).

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

20321130012 is a wasteful number, since it uses less digits than its factorization.

20321130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35222 (or 35220 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20321130012 its reverse (21003112302), we get a palindrome (41324242314).

The spelling of 20321130012 in words is "twenty billion, three hundred twenty-one million, one hundred thirty thousand, twelve".