2112012002021 has 16 divisors (see below), whose sum is σ = 2175621752448. Its totient is φ = 2049328632000.

The previous prime is 2112012001949. The next prime is 2112012002039. The reversal of 2112012002021 is 1202002102112.

It is a cyclic number.

It is not a de Polignac number, because 2112012002021 - 2³⁴ = 2094832132837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2112012001987 and 2112012002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112012002081) 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, 4525706 + ... + 4970516.

It is an arithmetic number, because the mean of its divisors is an integer number (135976359528).

Almost surely, 2^{2112012002021} is an apocalyptic number.

It is an amenable number.

2112012002021 is a deficient number, since it is larger than the sum of its proper divisors (63609750427).

2112012002021 is a wasteful number, since it uses less digits than its factorization.

2112012002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445852.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2112012002021 its reverse (1202002102112), we get a palindrome (3314014104133).

The spelling of 2112012002021 in words is "two trillion, one hundred twelve billion, twelve million, two thousand, twenty-one".