100111230313021 has 4 divisors (see below), whose sum is σ = 100111472709052. Its totient is φ = 100110987916992.

The previous prime is 100111230313019. The next prime is 100111230313033. The reversal of 100111230313021 is 120313032111001.

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 44348420810521 + 55762809502500 = 6659461^2 + 7467450^2 .

It is a cyclic number.

It is not a de Polignac number, because 100111230313021 - 2¹ = 100111230313019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100111230313021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111230313621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120577446 + ... + 121404871.

It is an arithmetic number, because the mean of its divisors is an integer number (25027868177263).

Almost surely, 2^{100111230313021} is an apocalyptic number.

It is an amenable number.

100111230313021 is a deficient number, since it is larger than the sum of its proper divisors (242396031).

100111230313021 is an equidigital number, since it uses as much as digits as its factorization.

100111230313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242396030.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 100111230313021 its reverse (120313032111001), we get a palindrome (220424262424022).

The spelling of 100111230313021 in words is "one hundred trillion, one hundred eleven billion, two hundred thirty million, three hundred thirteen thousand, twenty-one".