120102010020 has 36 divisors (see below), whose sum is σ = 364309430940. Its totient is φ = 32027202624.

The previous prime is 120102009919. The next prime is 120102010087. The reversal of 120102010020 is 20010201021.

It can be written as a sum of positive squares in 2 ways, for example, as 48016203876 + 72085806144 = 219126^2 + 268488^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120102009984 and 120102010011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333616515 + ... + 333616874.

It is an arithmetic number, because the mean of its divisors is an integer number (10119706415).

Almost surely, 2^120102010020 is an apocalyptic number.

120102010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120102010020 is an abundant number, since it is smaller than the sum of its proper divisors (244207420920).

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

120102010020 is a wasteful number, since it uses less digits than its factorization.

120102010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667233404 (or 667233399 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120102010020 its reverse (20010201021), we get a palindrome (140112211041).

The spelling of 120102010020 in words is "one hundred twenty billion, one hundred two million, ten thousand, twenty".