320001022100 has 36 divisors (see below), whose sum is σ = 694590243900. Its totient is φ = 127965749760.

The previous prime is 320001022097. The next prime is 320001022109. The reversal of 320001022100 is 1220100023.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 61900444804 + 258100577296 = 248798^2 + 508036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320001022109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60485 + ... + 802284.

Almost surely, 2^320001022100 is an apocalyptic number.

It is an amenable number.

320001022100 is an abundant number, since it is smaller than the sum of its proper divisors (374589221800).

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

320001022100 is a wasteful number, since it uses less digits than its factorization.

320001022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866492 (or 866485 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 320001022100 its reverse (1220100023), we get a palindrome (321221122123).

The spelling of 320001022100 in words is "three hundred twenty billion, one million, twenty-two thousand, one hundred".