220131221329 has 8 divisors (see below), whose sum is σ = 224927424000. Its totient is φ = 215339708736.

The previous prime is 220131221311. The next prime is 220131221351. The reversal of 220131221329 is 923122131022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220131221329 - 2¹⁵ = 220131188561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220131221297 and 220131221306.

It is not an unprimeable number, because it can be changed into a prime (220131221029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077544 + ... + 1265449.

It is an arithmetic number, because the mean of its divisors is an integer number (28115928000).

Almost surely, 2^220131221329 is an apocalyptic number.

It is an amenable number.

220131221329 is a deficient number, since it is larger than the sum of its proper divisors (4796202671).

220131221329 is a wasteful number, since it uses less digits than its factorization.

220131221329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345039.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 220131221329 in words is "two hundred twenty billion, one hundred thirty-one million, two hundred twenty-one thousand, three hundred twenty-nine".