212100020000012 has 12 divisors (see below), whose sum is σ = 371183576506680. Its totient is φ = 106047569569536.

The previous prime is 212100020000009. The next prime is 212100020000119. The reversal of 212100020000012 is 210000020001212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212100019999948 and 212100020000002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609912062 + ... + 610259717.

It is an arithmetic number, because the mean of its divisors is an integer number (30931964708890).

Almost surely, 2^{212100020000012} is an apocalyptic number.

It is an amenable number.

212100020000012 is a deficient number, since it is larger than the sum of its proper divisors (159083556506668).

212100020000012 is a wasteful number, since it uses less digits than its factorization.

212100020000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220215240 (or 1220215238 counting only the distinct ones).

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

Adding to 212100020000012 its reverse (210000020001212), we get a palindrome (422100040001224).

The spelling of 212100020000012 in words is "two hundred twelve trillion, one hundred billion, twenty million, twelve", and thus it is an aban number.