2012120010021 has 64 divisors (see below), whose sum is σ = 3190623436800. Its totient is φ = 1114777137600.

The previous prime is 2012120009993. The next prime is 2012120010079. The reversal of 2012120010021 is 1200100212102.

It is not a de Polignac number, because 2012120010021 - 2⁶ = 2012120009957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012120009979 and 2012120010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012120010221) 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 63 ways as a sum of consecutive naturals, for example, 1611460 + ... + 2573138.

It is an arithmetic number, because the mean of its divisors is an integer number (49853491200).

Almost surely, 2^{2012120010021} is an apocalyptic number.

It is an amenable number.

2012120010021 is a deficient number, since it is larger than the sum of its proper divisors (1178503426779).

2012120010021 is a wasteful number, since it uses less digits than its factorization.

2012120010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961830.

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

Adding to 2012120010021 its reverse (1200100212102), we get a palindrome (3212220222123).

The spelling of 2012120010021 in words is "two trillion, twelve billion, one hundred twenty million, ten thousand, twenty-one".