2012111000020 has 24 divisors (see below), whose sum is σ = 4609563382368. Its totient is φ = 731676727200.

The previous prime is 2012110999991. The next prime is 2012111000041. The reversal of 2012111000020 is 200001112102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2012110999970 and 2012111000006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4572979326 + ... + 4572979765.

It is an arithmetic number, because the mean of its divisors is an integer number (192065140932).

Almost surely, 2^{2012111000020} is an apocalyptic number.

2012111000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012111000020 is an abundant number, since it is smaller than the sum of its proper divisors (2597452382348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2012111000020 is a wasteful number, since it uses less digits than its factorization.

2012111000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9145959111 (or 9145959109 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2012111000020 its reverse (200001112102), we get a palindrome (2212112112122).

The spelling of 2012111000020 in words is "two trillion, twelve billion, one hundred eleven million, twenty", and thus it is an aban number.