2001212100012 has 24 divisors (see below), whose sum is σ = 4669530467056. Its totient is φ = 667065619008.

The previous prime is 2001212099947. The next prime is 2001212100047. The reversal of 2001212100012 is 2100012121002.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 1223538 + ... + 2345094.

Almost surely, 2^{2001212100012} is an apocalyptic number.

It is an amenable number.

2001212100012 is an abundant number, since it is smaller than the sum of its proper divisors (2668318367044).

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

2001212100012 is a wasteful number, since it uses less digits than its factorization.

2001212100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270257 (or 1270255 counting only the distinct ones).

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

Adding to 2001212100012 its reverse (2100012121002), we get a palindrome (4101224221014).

The spelling of 2001212100012 in words is "two trillion, one billion, two hundred twelve million, one hundred thousand, twelve".