2012210000021 has 8 divisors (see below), whose sum is σ = 2167242346080. Its totient is φ = 1857212934192.

The previous prime is 2012209999999. The next prime is 2012210000027. The reversal of 2012210000021 is 1200000122102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012210000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012209999957 and 2012210000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012210000027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8701535 + ... + 8929788.

It is an arithmetic number, because the mean of its divisors is an integer number (270905293260).

Almost surely, 2^{2012210000021} is an apocalyptic number.

It is an amenable number.

2012210000021 is a deficient number, since it is larger than the sum of its proper divisors (155032346059).

2012210000021 is a wasteful number, since it uses less digits than its factorization.

2012210000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17640115.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2012210000021 its reverse (1200000122102), we get a palindrome (3212210122123).

The spelling of 2012210000021 in words is "two trillion, twelve billion, two hundred ten million, twenty-one", and thus it is an aban number.