2012111000021 has 8 divisors (see below), whose sum is σ = 2042667879360. Its totient is φ = 1981569572928.

The previous prime is 2012110999991. The next prime is 2012111000041. The reversal of 2012111000021 is 1200001112102.

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 2012111000021 - 2⁶ = 2012110999957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012110999966 and 2012111000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012111000041) 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, 3600521 + ... + 4121646.

It is an arithmetic number, because the mean of its divisors is an integer number (255333484920).

Almost surely, 2^{2012111000021} is an apocalyptic number.

It is an amenable number.

2012111000021 is a deficient number, since it is larger than the sum of its proper divisors (30556879339).

2012111000021 is an equidigital number, since it uses as much as digits as its factorization.

2012111000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726123.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2012111000021 its reverse (1200001112102), we get a palindrome (3212112112123).

The spelling of 2012111000021 in words is "two trillion, twelve billion, one hundred eleven million, twenty-one", and thus it is an aban number.