320220001221121 has 16 divisors (see below), whose sum is σ = 328557018544128. Its totient is φ = 311948512059600.

The previous prime is 320220001221091. The next prime is 320220001221187. The reversal of 320220001221121 is 121122100022023.

It is a cyclic number.

It is not a de Polignac number, because 320220001221121 - 2⁷ = 320220001220993 is a prime.

It is a super-2 number, since 2×320220001221121² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320220001225121) 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, 3413386 + ... + 25536076.

It is an arithmetic number, because the mean of its divisors is an integer number (20534813659008).

Almost surely, 2^{320220001221121} is an apocalyptic number.

It is an amenable number.

320220001221121 is a deficient number, since it is larger than the sum of its proper divisors (8337017323007).

320220001221121 is a wasteful number, since it uses less digits than its factorization.

320220001221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22124172.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 320220001221121 its reverse (121122100022023), we get a palindrome (441342101243144).

The spelling of 320220001221121 in words is "three hundred twenty trillion, two hundred twenty billion, one million, two hundred twenty-one thousand, one hundred twenty-one".