100312043221 has 8 divisors (see below), whose sum is σ = 109395802880. Its totient is φ = 91423633392.

The previous prime is 100312043207. The next prime is 100312043239. The reversal of 100312043221 is 122340213001.

It is a happy number.

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

It is not a de Polignac number, because 100312043221 - 2⁵ = 100312043189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100312043281) 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 7 ways as a sum of consecutive naturals, for example, 48836385 + ... + 48838438.

It is an arithmetic number, because the mean of its divisors is an integer number (13674475360).

Almost surely, 2^100312043221 is an apocalyptic number.

It is an amenable number.

100312043221 is a deficient number, since it is larger than the sum of its proper divisors (9083759659).

100312043221 is an equidigital number, since it uses as much as digits as its factorization.

100312043221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97674915.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 100312043221 its reverse (122340213001), we get a palindrome (222652256222).

The spelling of 100312043221 in words is "one hundred billion, three hundred twelve million, forty-three thousand, two hundred twenty-one".