120020020021 has 16 divisors (see below), whose sum is σ = 137957529600. Its totient is φ = 103264902000.

The previous prime is 120020020013. The next prime is 120020020063.

120020020021 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 120020020021 - 2³ = 120020020013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120020020721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68805 + ... + 494746.

It is an arithmetic number, because the mean of its divisors is an integer number (8622345600).

Almost surely, 2^120020020021 is an apocalyptic number.

120020020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120020020021 is a deficient number, since it is larger than the sum of its proper divisors (17937509579).

120020020021 is a wasteful number, since it uses less digits than its factorization.

120020020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564600.

The product of its (nonzero) digits is 16, while the sum is 10.

It can be divided in two parts, 1200200 and 20021, that added together give a palindrome (1220221).

The spelling of 120020020021 in words is "one hundred twenty billion, twenty million, twenty thousand, twenty-one".