20113031230220 has 48 divisors (see below), whose sum is σ = 42595308756000. Its totient is φ = 7977221975040.

The previous prime is 20113031230199. The next prime is 20113031230339. The reversal of 20113031230220 is 2203213031102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20113031230192 and 20113031230201.

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, 4208525 + ... + 7611684.

It is an arithmetic number, because the mean of its divisors is an integer number (887402265750).

Almost surely, 2^{20113031230220} is an apocalyptic number.

20113031230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113031230220 is an abundant number, since it is smaller than the sum of its proper divisors (22482277525780).

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

20113031230220 is a wasteful number, since it uses less digits than its factorization.

20113031230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11820938 (or 11820936 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20113031230220 its reverse (2203213031102), we get a palindrome (22316244261322).

The spelling of 20113031230220 in words is "twenty trillion, one hundred thirteen billion, thirty-one million, two hundred thirty thousand, two hundred twenty".