10120020020 has 96 divisors (see below), whose sum is σ = 23423178240. Its totient is φ = 3642275840.

The previous prime is 10120020013. The next prime is 10120020023. The reversal of 10120020020 is 2002002101.

10120020020 is a modest number, since divided by 20020 gives 10120 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120020023) 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, 10357772 + ... + 10358748.

It is an arithmetic number, because the mean of its divisors is an integer number (243991440).

Almost surely, 2^10120020020 is an apocalyptic number.

10120020020 is a gapful number since it is divisible by the number (10) 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 10120020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11711589120).

10120020020 is an abundant number, since it is smaller than the sum of its proper divisors (13303158220).

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

10120020020 is a wasteful number, since it uses less digits than its factorization.

10120020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1431 counting only the distinct ones).

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

Adding to 10120020020 its reverse (2002002101), we get a palindrome (12122022121).

The spelling of 10120020020 in words is "ten billion, one hundred twenty million, twenty thousand, twenty".