120321120021 has 16 divisors (see below), whose sum is σ = 161290483200. Its totient is φ = 79783904448.

The previous prime is 120321119999. The next prime is 120321120037. The reversal of 120321120021 is 120021123021.

It is not a de Polignac number, because 120321120021 - 2¹³ = 120321111829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120321120041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367035 + ... + 612663.

It is an arithmetic number, because the mean of its divisors is an integer number (10080655200).

Almost surely, 2^120321120021 is an apocalyptic number.

It is an amenable number.

120321120021 is a deficient number, since it is larger than the sum of its proper divisors (40969363179).

120321120021 is a wasteful number, since it uses less digits than its factorization.

120321120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246508.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 120321120021 its reverse (120021123021), we get a palindrome (240342243042).

The spelling of 120321120021 in words is "one hundred twenty billion, three hundred twenty-one million, one hundred twenty thousand, twenty-one".