2112021020009 has 16 divisors (see below), whose sum is σ = 2166046956288. Its totient is φ = 2058387606912.

The previous prime is 2112021019991. The next prime is 2112021020089. The reversal of 2112021020009 is 9000201202112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2112021020009 - 2¹⁶ = 2112020954473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112021020089) 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, 14124374 + ... + 14273120.

It is an arithmetic number, because the mean of its divisors is an integer number (135377934768).

Almost surely, 2^{2112021020009} is an apocalyptic number.

It is an amenable number.

2112021020009 is a deficient number, since it is larger than the sum of its proper divisors (54025936279).

2112021020009 is a wasteful number, since it uses less digits than its factorization.

2112021020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150064.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 2112021020009 in words is "two trillion, one hundred twelve billion, twenty-one million, twenty thousand, nine".