20012110320 has 160 divisors (see below), whose sum is σ = 65746149120. Its totient is φ = 5018112000.

The previous prime is 20012110309. The next prime is 20012110361. The reversal of 20012110320 is 2301121002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20012110296 and 20012110305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8889195 + ... + 8891445.

It is an arithmetic number, because the mean of its divisors is an integer number (410913432).

Almost surely, 2^20012110320 is an apocalyptic number.

20012110320 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 20012110320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32873074560).

20012110320 is an abundant number, since it is smaller than the sum of its proper divisors (45734038800).

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

20012110320 is a wasteful number, since it uses less digits than its factorization.

20012110320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463 (or 4457 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20012110320 its reverse (2301121002), we get a palindrome (22313231322).

The spelling of 20012110320 in words is "twenty billion, twelve million, one hundred ten thousand, three hundred twenty".