212100020000008 has 64 divisors (see below), whose sum is σ = 454656570825600. Its totient is φ = 90868706772480.

The previous prime is 212100019999991. The next prime is 212100020000009. The reversal of 212100020000008 is 800000020001212.

It is a junction number, because it is equal to n+sod(n) for n = 212100019999946 and 212100020000000.

It is not an unprimeable number, because it can be changed into a prime (212100020000009) 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, 3686807788 + ... + 3686865316.

It is an arithmetic number, because the mean of its divisors is an integer number (7104008919150).

Almost surely, 2^{212100020000008} is an apocalyptic number.

212100020000008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

212100020000008 is an abundant number, since it is smaller than the sum of its proper divisors (242556550825592).

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

212100020000008 is a wasteful number, since it uses less digits than its factorization.

212100020000008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79070 (or 79066 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The spelling of 212100020000008 in words is "two hundred twelve trillion, one hundred billion, twenty million, eight", and thus it is an aban number.