20321300012 has 12 divisors (see below), whose sum is σ = 38297834736. Its totient is φ = 9379061520.

The previous prime is 20321299931. The next prime is 20321300053. The reversal of 20321300012 is 21000312302.

It is a happy number.

It is a super-2 number, since 2×20321300012² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20321300012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195397064 + ... + 195397167.

It is an arithmetic number, because the mean of its divisors is an integer number (3191486228).

Almost surely, 2^20321300012 is an apocalyptic number.

It is an amenable number.

20321300012 is a deficient number, since it is larger than the sum of its proper divisors (17976534724).

20321300012 is a wasteful number, since it uses less digits than its factorization.

20321300012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390794248 (or 390794246 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20321300012 its reverse (21000312302), we get a palindrome (41321612314).

The spelling of 20321300012 in words is "twenty billion, three hundred twenty-one million, three hundred thousand, twelve".