120221021321 has 16 divisors (see below), whose sum is σ = 128484403200. Its totient is φ = 112233401280.

The previous prime is 120221021317. The next prime is 120221021491. The reversal of 120221021321 is 123120122021.

It is a cyclic number.

It is not a de Polignac number, because 120221021321 - 2² = 120221021317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120221021321.

It is not an unprimeable number, because it can be changed into a prime (120221024321) 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, 25346 + ... + 491003.

It is an arithmetic number, because the mean of its divisors is an integer number (8030275200).

Almost surely, 2^120221021321 is an apocalyptic number.

It is an amenable number.

120221021321 is a deficient number, since it is larger than the sum of its proper divisors (8263381879).

120221021321 is a wasteful number, since it uses less digits than its factorization.

120221021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516616.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 120221021321 its reverse (123120122021), we get a palindrome (243341143342).

The spelling of 120221021321 in words is "one hundred twenty billion, two hundred twenty-one million, twenty-one thousand, three hundred twenty-one".