2101112200021 has 8 divisors (see below), whose sum is σ = 2104084461024. Its totient is φ = 2098141893360.

The previous prime is 2101112200009. The next prime is 2101112200039. The reversal of 2101112200021 is 1200022111012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101112200021 - 2⁹ = 2101112199509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101112199974 and 2101112200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101112200001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1669866 + ... + 2643988.

It is an arithmetic number, because the mean of its divisors is an integer number (263010557628).

Almost surely, 2^{2101112200021} is an apocalyptic number.

It is an amenable number.

2101112200021 is a deficient number, since it is larger than the sum of its proper divisors (2972261003).

2101112200021 is a wasteful number, since it uses less digits than its factorization.

2101112200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977171.

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

Adding to 2101112200021 its reverse (1200022111012), we get a palindrome (3301134311033).

The spelling of 2101112200021 in words is "two trillion, one hundred one billion, one hundred twelve million, two hundred thousand, twenty-one".