2112013210021 has 16 divisors (see below), whose sum is σ = 2481380254080. Its totient is φ = 1772223088320.

The previous prime is 2112013210007. The next prime is 2112013210037. The reversal of 2112013210021 is 1200123102112.

It is a cyclic number.

It is not a de Polignac number, because 2112013210021 - 2⁷ = 2112013209893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2112013209977 and 2112013210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112013210001) 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 15 ways as a sum of consecutive naturals, for example, 2323920 + ... + 3102358.

It is an arithmetic number, because the mean of its divisors is an integer number (155086265880).

Almost surely, 2^{2112013210021} is an apocalyptic number.

It is an amenable number.

2112013210021 is a deficient number, since it is larger than the sum of its proper divisors (369367044059).

2112013210021 is a wasteful number, since it uses less digits than its factorization.

2112013210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797436.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2112013210021 its reverse (1200123102112), we get a palindrome (3312136312133).

The spelling of 2112013210021 in words is "two trillion, one hundred twelve billion, thirteen million, two hundred ten thousand, twenty-one".