100112342021 has 4 divisors (see below), whose sum is σ = 100112980044. Its totient is φ = 100111704000.

The previous prime is 100112341933. The next prime is 100112342111. The reversal of 100112342021 is 120243211001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 95363616100 + 4748725921 = 308810^2 + 68911^2 .

It is a cyclic number.

It is not a de Polignac number, because 100112342021 - 2²² = 100108147717 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 (100112312021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98471 + ... + 458171.

It is an arithmetic number, because the mean of its divisors is an integer number (25028245011).

Almost surely, 2^100112342021 is an apocalyptic number.

It is an amenable number.

100112342021 is a deficient number, since it is larger than the sum of its proper divisors (638023).

100112342021 is an equidigital number, since it uses as much as digits as its factorization.

100112342021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638022.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 100112342021 its reverse (120243211001), we get a palindrome (220355553022).

The spelling of 100112342021 in words is "one hundred billion, one hundred twelve million, three hundred forty-two thousand, twenty-one".