120102010000020 has 144 divisors (see below), whose sum is σ = 381106530080640. Its totient is φ = 30557549645568.

The previous prime is 120102009999973. The next prime is 120102010000061. The reversal of 120102010000020 is 20000010201021.

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 = 120102009999957 and 120102010000011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34893130 + ... + 38180289.

It is an arithmetic number, because the mean of its divisors is an integer number (2646573125560).

Almost surely, 2^{120102010000020} is an apocalyptic number.

120102010000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120102010000020 is an abundant number, since it is smaller than the sum of its proper divisors (261004520080620).

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

120102010000020 is a wasteful number, since it uses less digits than its factorization.

120102010000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73073854 (or 73073849 counting only the distinct ones).

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

Adding to 120102010000020 its reverse (20000010201021), we get a palindrome (140102020201041).

The spelling of 120102010000020 in words is "one hundred twenty trillion, one hundred two billion, ten million, twenty", and thus it is an aban number.