20012103320 has 128 divisors (see below), whose sum is σ = 51021895680. Its totient is φ = 6998400000.

The previous prime is 20012103317. The next prime is 20012103323. The reversal of 20012103320 is 2330121002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20012103317) and next prime (20012103323).

It is a junction number, because it is equal to n+sod(n) for n = 20012103295 and 20012103304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012103323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2218820 + ... + 2227820.

It is an arithmetic number, because the mean of its divisors is an integer number (398608560).

Almost surely, 2^20012103320 is an apocalyptic number.

20012103320 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 20012103320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25510947840).

20012103320 is an abundant number, since it is smaller than the sum of its proper divisors (31009792360).

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

20012103320 is a wasteful number, since it uses less digits than its factorization.

20012103320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217 (or 9213 counting only the distinct ones).

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

Adding to 20012103320 its reverse (2330121002), we get a palindrome (22342224322).

The spelling of 20012103320 in words is "twenty billion, twelve million, one hundred three thousand, three hundred twenty".