100243213133321 has 4 divisors (see below), whose sum is σ = 100692734268672. Its totient is φ = 99793691997972.

The previous prime is 100243213133303. The next prime is 100243213133341. The reversal of 100243213133321 is 123331312342001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100243213133321 - 2¹⁸ = 100243212871177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100243213133341) 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, 224760567341 + ... + 224760567786.

It is an arithmetic number, because the mean of its divisors is an integer number (25173183567168).

Almost surely, 2^{100243213133321} is an apocalyptic number.

It is an amenable number.

100243213133321 is a deficient number, since it is larger than the sum of its proper divisors (449521135351).

100243213133321 is an equidigital number, since it uses as much as digits as its factorization.

100243213133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449521135350.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 100243213133321 its reverse (123331312342001), we get a palindrome (223574525475322).

The spelling of 100243213133321 in words is "one hundred trillion, two hundred forty-three billion, two hundred thirteen million, one hundred thirty-three thousand, three hundred twenty-one".