320223000021 has 8 divisors (see below), whose sum is σ = 427007136864. Its totient is φ = 213460431600.

The previous prime is 320223000017. The next prime is 320223000023. The reversal of 320223000021 is 120000322023.

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

It is not a de Polignac number, because 320223000021 - 2² = 320223000017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320223000023) 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, 5357430 + ... + 5416871.

It is an arithmetic number, because the mean of its divisors is an integer number (53375892108).

Almost surely, 2^320223000021 is an apocalyptic number.

It is an amenable number.

320223000021 is a deficient number, since it is larger than the sum of its proper divisors (106784136843).

320223000021 is a wasteful number, since it uses less digits than its factorization.

320223000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10784211.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 320223000021 its reverse (120000322023), we get a palindrome (440223322044).

The spelling of 320223000021 in words is "three hundred twenty billion, two hundred twenty-three million, twenty-one", and thus it is an aban number.