220421432329 has 4 divisors (see below), whose sum is σ = 251910208384. Its totient is φ = 188932656276.

The previous prime is 220421432299. The next prime is 220421432359. The reversal of 220421432329 is 923234124022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (220421432299) and next prime (220421432359).

It is not a de Polignac number, because 220421432329 - 2⁷ = 220421432201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220421432294 and 220421432303.

It is not an unprimeable number, because it can be changed into a prime (220421432359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15744388017 + ... + 15744388030.

It is an arithmetic number, because the mean of its divisors is an integer number (62977552096).

Almost surely, 2^220421432329 is an apocalyptic number.

It is an amenable number.

220421432329 is a deficient number, since it is larger than the sum of its proper divisors (31488776055).

220421432329 is an equidigital number, since it uses as much as digits as its factorization.

220421432329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31488776054.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 220421432329 in words is "two hundred twenty billion, four hundred twenty-one million, four hundred thirty-two thousand, three hundred twenty-nine".