2112001012021 has 8 divisors (see below), whose sum is σ = 2169103289760. Its totient is φ = 2054899848528.

The previous prime is 2112001012013. The next prime is 2112001012031. The reversal of 2112001012021 is 1202101002112.

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

It is not a de Polignac number, because 2112001012021 - 2³ = 2112001012013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112001011992 and 2112001012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112001012001) 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, 4796970 + ... + 5218708.

It is an arithmetic number, because the mean of its divisors is an integer number (271137911220).

Almost surely, 2^{2112001012021} is an apocalyptic number.

It is an amenable number.

2112001012021 is a deficient number, since it is larger than the sum of its proper divisors (57102277739).

2112001012021 is a wasteful number, since it uses less digits than its factorization.

2112001012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557123.

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

Adding to 2112001012021 its reverse (1202101002112), we get a palindrome (3314102014133).

Subtracting from 2112001012021 its reverse (1202101002112), we obtain a palindrome (909900009909).

It can be divided in two parts, 211200 and 1012021, that added together give a palindrome (1223221).

The spelling of 2112001012021 in words is "two trillion, one hundred twelve billion, one million, twelve thousand, twenty-one".