12110202100021 has 4 divisors (see below), whose sum is σ = 12822566929452. Its totient is φ = 11397837270592.

The previous prime is 12110202099979. The next prime is 12110202100163. The reversal of 12110202100021 is 12000120201121.

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 6957914981796 + 5152287118225 = 2637786^2 + 2269865^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110202100021 - 2¹³ = 12110202091829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110202099974 and 12110202100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110202800021) 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 3 ways as a sum of consecutive naturals, for example, 356182414690 + ... + 356182414723.

It is an arithmetic number, because the mean of its divisors is an integer number (3205641732363).

Almost surely, 2^{12110202100021} is an apocalyptic number.

It is an amenable number.

12110202100021 is a deficient number, since it is larger than the sum of its proper divisors (712364829431).

12110202100021 is an equidigital number, since it uses as much as digits as its factorization.

12110202100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712364829430.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12110202100021 its reverse (12000120201121), we get a palindrome (24110322301142).

The spelling of 12110202100021 in words is "twelve trillion, one hundred ten billion, two hundred two million, one hundred thousand, twenty-one".