120200020020021 has 16 divisors (see below), whose sum is σ = 171077863933440. Its totient is φ = 74846565465840.

The previous prime is 120200020019969. The next prime is 120200020020061. The reversal of 120200020020021 is 120020020002021.

It is not a de Polignac number, because 120200020020021 - 2³⁹ = 119650264206133 is a prime.

It is a super-3 number, since 3×120200020020021³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120200020019979 and 120200020020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120200020020061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14850504975 + ... + 14850513068.

It is an arithmetic number, because the mean of its divisors is an integer number (10692366495840).

Almost surely, 2^{120200020020021} is an apocalyptic number.

It is an amenable number.

120200020020021 is a deficient number, since it is larger than the sum of its proper divisors (50877843913419).

120200020020021 is a wasteful number, since it uses less digits than its factorization.

120200020020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29701018136.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 120200020020021 its reverse (120020020002021), we get a palindrome (240220040022042).

The spelling of 120200020020021 in words is "one hundred twenty trillion, two hundred billion, twenty million, twenty thousand, twenty-one".