210111102200021 has 16 divisors (see below), whose sum is σ = 245231249582400. Its totient is φ = 177990423062400.

The previous prime is 210111102200009. The next prime is 210111102200089. The reversal of 210111102200021 is 120002201111012.

210111102200021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210111102200021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210111102199969 and 210111102200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111102260021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8240284616 + ... + 8240310113.

It is an arithmetic number, because the mean of its divisors is an integer number (15326953098900).

Almost surely, 2^{210111102200021} is an apocalyptic number.

It is an amenable number.

210111102200021 is a deficient number, since it is larger than the sum of its proper divisors (35120147382379).

210111102200021 is a wasteful number, since it uses less digits than its factorization.

210111102200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16480594820.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210111102200021 its reverse (120002201111012), we get a palindrome (330113303311033).

The spelling of 210111102200021 in words is "two hundred ten trillion, one hundred eleven billion, one hundred two million, two hundred thousand, twenty-one".