320220303012 has 36 divisors (see below), whose sum is σ = 809501521920. Its totient is φ = 106732748592.

The previous prime is 320220303001. The next prime is 320220303019. The reversal of 320220303012 is 210303022023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×320220303012² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (320220303019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236733 + ... + 834555.

Almost surely, 2^320220303012 is an apocalyptic number.

It is an amenable number.

320220303012 is an abundant number, since it is smaller than the sum of its proper divisors (489281218908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320220303012 is a wasteful number, since it uses less digits than its factorization.

320220303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612712 (or 612707 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 320220303012 its reverse (210303022023), we get a palindrome (530523325035).

The spelling of 320220303012 in words is "three hundred twenty billion, two hundred twenty million, three hundred three thousand, twelve".