100320023221 has 12 divisors (see below), whose sum is σ = 110282731776. Its totient is φ = 91188760520.

The previous prime is 100320023207. The next prime is 100320023239. The reversal of 100320023221 is 122320023001.

It is not a de Polignac number, because 100320023221 - 2²¹ = 100317926069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100320023195 and 100320023204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100320023201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1026156 + ... + 1119658.

It is an arithmetic number, because the mean of its divisors is an integer number (9190227648).

Almost surely, 2^100320023221 is an apocalyptic number.

100320023221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100320023221 is a deficient number, since it is larger than the sum of its proper divisors (9962708555).

100320023221 is an equidigital number, since it uses as much as digits as its factorization.

100320023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102392 (or 102381 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 100320023221 its reverse (122320023001), we get a palindrome (222640046222).

The spelling of 100320023221 in words is "one hundred billion, three hundred twenty million, twenty-three thousand, two hundred twenty-one".