120021201011121 has 16 divisors (see below), whose sum is σ = 170201523792384. Its totient is φ = 74969718799104.

The previous prime is 120021201011081. The next prime is 120021201011123. The reversal of 120021201011121 is 121110102120021.

It is a happy number.

It is not a de Polignac number, because 120021201011121 - 2⁹ = 120021201010609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120021201011121.

It is not an unprimeable number, because it can be changed into a prime (120021201011123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5276573566 + ... + 5276596311.

It is an arithmetic number, because the mean of its divisors is an integer number (10637595237024).

Almost surely, 2^{120021201011121} is an apocalyptic number.

It is an amenable number.

120021201011121 is a deficient number, since it is larger than the sum of its proper divisors (50180322781263).

120021201011121 is a wasteful number, since it uses less digits than its factorization.

120021201011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10553170120.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120021201011121 its reverse (121110102120021), we get a palindrome (241131303131142).

The spelling of 120021201011121 in words is "one hundred twenty trillion, twenty-one billion, two hundred one million, eleven thousand, one hundred twenty-one".