20010112120 has 16 divisors (see below), whose sum is σ = 45022752360. Its totient is φ = 8004044832.

The previous prime is 20010112103. The next prime is 20010112127. The reversal of 20010112120 is 2121101002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20010112097 and 20010112106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010112127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250126362 + ... + 250126441.

Almost surely, 2^20010112120 is an apocalyptic number.

20010112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010112120 is an abundant number, since it is smaller than the sum of its proper divisors (25012640240).

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

20010112120 is a wasteful number, since it uses less digits than its factorization.

20010112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500252814 (or 500252810 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20010112120 its reverse (2121101002), we get a palindrome (22131213122).

The spelling of 20010112120 in words is "twenty billion, ten million, one hundred twelve thousand, one hundred twenty".