20112103031020 has 96 divisors (see below), whose sum is σ = 56707691959296. Its totient is φ = 5786499168000.

The previous prime is 20112103031011. The next prime is 20112103031071. The reversal of 20112103031020 is 2013030121102.

It is a junction number, because it is equal to n+sod(n) for n = 20112103030985 and 20112103031003.

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, 502280256 + ... + 502320295.

It is an arithmetic number, because the mean of its divisors is an integer number (590705124576).

Almost surely, 2^{20112103031020} is an apocalyptic number.

20112103031020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112103031020 is an abundant number, since it is smaller than the sum of its proper divisors (36595588928276).

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

20112103031020 is a wasteful number, since it uses less digits than its factorization.

20112103031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004600591 (or 1004600589 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20112103031020 its reverse (2013030121102), we get a palindrome (22125133152122).

The spelling of 20112103031020 in words is "twenty trillion, one hundred twelve billion, one hundred three million, thirty-one thousand, twenty".