320201323220100 has 144 divisors (see below), whose sum is σ = 1058815425920000. Its totient is φ = 73187741358720.

The previous prime is 320201323220027. The next prime is 320201323220117. The reversal of 320201323220100 is 1022323102023.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138501441 + ... + 140794359.

Almost surely, 2^{320201323220100} is an apocalyptic number.

320201323220100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320201323220100 is an abundant number, since it is smaller than the sum of its proper divisors (738614102699900).

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

320201323220100 is a wasteful number, since it uses less digits than its factorization.

320201323220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359442 (or 2359435 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 320201323220100 its reverse (1022323102023), we get a palindrome (321223646322123).

The spelling of 320201323220100 in words is "three hundred twenty trillion, two hundred one billion, three hundred twenty-three million, two hundred twenty thousand, one hundred".