100023201221 has 8 divisors (see below), whose sum is σ = 100292499744. Its totient is φ = 99754053840.

The previous prime is 100023201181. The next prime is 100023201227. The reversal of 100023201221 is 122102320001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100023201221 - 2¹⁴ = 100023184837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100023201196 and 100023201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100023201227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356326 + ... + 1428168.

It is an arithmetic number, because the mean of its divisors is an integer number (12536562468).

Almost surely, 2^100023201221 is an apocalyptic number.

It is an amenable number.

100023201221 is a deficient number, since it is larger than the sum of its proper divisors (269298523).

100023201221 is an equidigital number, since it uses as much as digits as its factorization.

100023201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75571.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 100023201221 its reverse (122102320001), we get a palindrome (222125521222).

The spelling of 100023201221 in words is "one hundred billion, twenty-three million, two hundred one thousand, two hundred twenty-one".