20330021311312 has 80 divisors (see below), whose sum is σ = 41572217263360. Its totient is φ = 9604569447936.

The previous prime is 20330021311309. The next prime is 20330021311321. The reversal of 20330021311312 is 21311312003302.

20330021311312 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20330021311312² (a number of 27 digits) contains 22 as substring.

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, 185738233 + ... + 185847655.

It is an arithmetic number, because the mean of its divisors is an integer number (519652715792).

Almost surely, 2^{20330021311312} 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 20330021311312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20786108631680).

20330021311312 is an abundant number, since it is smaller than the sum of its proper divisors (21242195952048).

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

20330021311312 is a wasteful number, since it uses less digits than its factorization.

20330021311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111060 (or 111054 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20330021311312 its reverse (21311312003302), we get a palindrome (41641333314614).

The spelling of 20330021311312 in words is "twenty trillion, three hundred thirty billion, twenty-one million, three hundred eleven thousand, three hundred twelve".