100333103222221 has 4 divisors (see below), whose sum is σ = 100723504402332. Its totient is φ = 99942702042112.

The previous prime is 100333103222179. The next prime is 100333103222281. The reversal of 100333103222221 is 122222301333001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75797674666596 + 24535428555625 = 8706186^2 + 4953325^2 .

It is a cyclic number.

It is not a de Polignac number, because 100333103222221 - 2³³ = 100324513287629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100333103222281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195200589670 + ... + 195200590183.

It is an arithmetic number, because the mean of its divisors is an integer number (25180876100583).

Almost surely, 2^{100333103222221} is an apocalyptic number.

It is an amenable number.

100333103222221 is a deficient number, since it is larger than the sum of its proper divisors (390401180111).

100333103222221 is an equidigital number, since it uses as much as digits as its factorization.

100333103222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390401180110.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 100333103222221 its reverse (122222301333001), we get a palindrome (222555404555222).

The spelling of 100333103222221 in words is "one hundred trillion, three hundred thirty-three billion, one hundred three million, two hundred twenty-two thousand, two hundred twenty-one".