120000200020020 has 36 divisors (see below), whose sum is σ = 364000606727940. Its totient is φ = 32000053338624.

The previous prime is 120000200019991. The next prime is 120000200020081. The reversal of 120000200020020 is 20020002000021.

It can be written as a sum of positive squares in 2 ways, for example, as 57051494923536 + 62948705096484 = 7553244^2 + 7934022^2 .

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 = 120000200019984 and 120000200020011.

It is a congruent number.

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, 333333888765 + ... + 333333889124.

It is an arithmetic number, because the mean of its divisors is an integer number (10111127964665).

Almost surely, 2^{120000200020020} is an apocalyptic number.

120000200020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120000200020020 is an abundant number, since it is smaller than the sum of its proper divisors (244000406707920).

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

120000200020020 is a wasteful number, since it uses less digits than its factorization.

120000200020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666667777904 (or 666667777899 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 120000200020020 its reverse (20020002000021), we get a palindrome (140020202020041).

The spelling of 120000200020020 in words is "one hundred twenty trillion, two hundred million, twenty thousand, twenty".