220031442321 has 4 divisors (see below), whose sum is σ = 293375256432. Its totient is φ = 146687628212.

The previous prime is 220031442283. The next prime is 220031442347. The reversal of 220031442321 is 123244130022.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 220031442321 - 2⁷ = 220031442193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220031442291 and 220031442300.

It is not an unprimeable number, because it can be changed into a prime (220031422321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36671907051 + ... + 36671907056.

It is an arithmetic number, because the mean of its divisors is an integer number (73343814108).

Almost surely, 2^220031442321 is an apocalyptic number.

It is an amenable number.

220031442321 is a deficient number, since it is larger than the sum of its proper divisors (73343814111).

220031442321 is an equidigital number, since it uses as much as digits as its factorization.

220031442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73343814110.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 220031442321 its reverse (123244130022), we get a palindrome (343275572343).

The spelling of 220031442321 in words is "two hundred twenty billion, thirty-one million, four hundred forty-two thousand, three hundred twenty-one".