2012100012021 has 32 divisors (see below), whose sum is σ = 3000995601408. Its totient is φ = 1188869552640.

The previous prime is 2012100012017. The next prime is 2012100012023. The reversal of 2012100012021 is 1202100012102.

It is not a de Polignac number, because 2012100012021 - 2² = 2012100012017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012100011988 and 2012100012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012100012023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4476465 + ... + 4905398.

It is an arithmetic number, because the mean of its divisors is an integer number (93781112544).

Almost surely, 2^{2012100012021} is an apocalyptic number.

It is an amenable number.

2012100012021 is a deficient number, since it is larger than the sum of its proper divisors (988895589387).

2012100012021 is a wasteful number, since it uses less digits than its factorization.

2012100012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9382041.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2012100012021 its reverse (1202100012102), we get a palindrome (3214200024123).

The spelling of 2012100012021 in words is "two trillion, twelve billion, one hundred million, twelve thousand, twenty-one".