2012120000021 has 16 divisors (see below), whose sum is σ = 2025988752000. Its totient is φ = 1998292716288.

The previous prime is 2012119999999. The next prime is 2012120000041. The reversal of 2012120000021 is 1200000212102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012120000021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012119999957 and 2012120000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012120000041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268028750 + ... + 268036256.

It is an arithmetic number, because the mean of its divisors is an integer number (126624297000).

Almost surely, 2^{2012120000021} is an apocalyptic number.

It is an amenable number.

2012120000021 is a deficient number, since it is larger than the sum of its proper divisors (13868751979).

2012120000021 is a wasteful number, since it uses less digits than its factorization.

2012120000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028.

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

Adding to 2012120000021 its reverse (1200000212102), we get a palindrome (3212120212123).

The spelling of 2012120000021 in words is "two trillion, twelve billion, one hundred twenty million, twenty-one", and thus it is an aban number.