320020501100 has 36 divisors (see below), whose sum is σ = 700815561600. Its totient is φ = 126833808960.

The previous prime is 320020501081. The next prime is 320020501109. The reversal of 320020501100 is 1105020023.

It is a happy number.

It is a super-2 number, since 2×320020501100² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320020501109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14668940 + ... + 14690739.

Almost surely, 2^320020501100 is an apocalyptic number.

It is an amenable number.

320020501100 is an abundant number, since it is smaller than the sum of its proper divisors (380795060500).

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

320020501100 is a wasteful number, since it uses less digits than its factorization.

320020501100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29359802 (or 29359795 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

Adding to 320020501100 its reverse (1105020023), we get a palindrome (321125521123).

The spelling of 320020501100 in words is "three hundred twenty billion, twenty million, five hundred one thousand, one hundred".