120021120020011 has 16 divisors (see below), whose sum is σ = 139456504811520. Its totient is φ = 101165562459360.

The previous prime is 120021120019991. The next prime is 120021120020057. The reversal of 120021120020011 is 110020021120021.

It is not a de Polignac number, because 120021120020011 - 2¹⁵ = 120021119987243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021120019973 and 120021120020000.

It is not an unprimeable number, because it can be changed into a prime (120021120080011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310206651 + ... + 310593316.

It is an arithmetic number, because the mean of its divisors is an integer number (8716031550720).

Almost surely, 2^{120021120020011} is an apocalyptic number.

120021120020011 is a deficient number, since it is larger than the sum of its proper divisors (19435384791509).

120021120020011 is an equidigital number, since it uses as much as digits as its factorization.

120021120020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620800434.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120021120020011 its reverse (110020021120021), we get a palindrome (230041141140032).

The spelling of 120021120020011 in words is "one hundred twenty trillion, twenty-one billion, one hundred twenty million, twenty thousand, eleven".