120021001010020 has 48 divisors (see below), whose sum is σ = 286911863296128. Its totient is φ = 41746435132160.

The previous prime is 120021001009993. The next prime is 120021001010021. The reversal of 120021001010020 is 20010100120021.

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 = 120021001009979 and 120021001010006.

It is not an unprimeable number, because it can be changed into a prime (120021001010021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11859777649 + ... + 11859787768.

It is an arithmetic number, because the mean of its divisors is an integer number (5977330485336).

Almost surely, 2^{120021001010020} is an apocalyptic number.

120021001010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021001010020 is an abundant number, since it is smaller than the sum of its proper divisors (166890862286108).

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

120021001010020 is a wasteful number, since it uses less digits than its factorization.

120021001010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23719565460 (or 23719565458 counting only the distinct ones).

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

Adding to 120021001010020 its reverse (20010100120021), we get a palindrome (140031101130041).

The spelling of 120021001010020 in words is "one hundred twenty trillion, twenty-one billion, one million, ten thousand, twenty".