20202012120 has 128 divisors (see below), whose sum is σ = 62351078400. Its totient is φ = 5234072064.

The previous prime is 20202012113. The next prime is 20202012121. The reversal of 20202012120 is 2121020202.

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 = 20202012096 and 20202012105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202012121) 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, 639661 + ... + 670499.

It is an arithmetic number, because the mean of its divisors is an integer number (487117800).

Almost surely, 2^20202012120 is an apocalyptic number.

20202012120 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 20202012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31175539200).

20202012120 is an abundant number, since it is smaller than the sum of its proper divisors (42149066280).

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

20202012120 is a wasteful number, since it uses less digits than its factorization.

20202012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31009 (or 31005 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20202012120 its reverse (2121020202), we get a palindrome (22323032322).

The spelling of 20202012120 in words is "twenty billion, two hundred two million, twelve thousand, one hundred twenty".