120001010020 has 24 divisors (see below), whose sum is σ = 252371113344. Its totient is φ = 47930119776.

The previous prime is 120001009987. The next prime is 120001010029. The reversal of 120001010020 is 20010100021.

It is a junction number, because it is equal to n+sod(n) for n = 120001009985 and 120001010012.

It is not an unprimeable number, because it can be changed into a prime (120001010029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4378764 + ... + 4406083.

It is an arithmetic number, because the mean of its divisors is an integer number (10515463056).

Almost surely, 2^120001010020 is an apocalyptic number.

120001010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001010020 is an abundant number, since it is smaller than the sum of its proper divisors (132370103324).

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

120001010020 is a wasteful number, since it uses less digits than its factorization.

120001010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8785539 (or 8785537 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 120001010020 its reverse (20010100021), we get a palindrome (140011110041).

Subtracting from 120001010020 its reverse (20010100021), we obtain a palindrome (99990909999).

The spelling of 120001010020 in words is "one hundred twenty billion, one million, ten thousand, twenty".