212000001012 has 36 divisors (see below), whose sum is σ = 548959356036. Its totient is φ = 68943089280.

The previous prime is 212000000977. The next prime is 212000001061. The reversal of 212000001012 is 210100000212.

It can be written as a sum of positive squares in 2 ways, for example, as 68893650576 + 143106350436 = 262476^2 + 378294^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 212000000985 and 212000001003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71814243 + ... + 71817194.

It is an arithmetic number, because the mean of its divisors is an integer number (15248871001).

Almost surely, 2^212000001012 is an apocalyptic number.

It is an amenable number.

212000001012 is an abundant number, since it is smaller than the sum of its proper divisors (336959355024).

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

212000001012 is a wasteful number, since it uses less digits than its factorization.

212000001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143631488 (or 143631483 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 212000001012 its reverse (210100000212), we get a palindrome (422100001224).

The spelling of 212000001012 in words is "two hundred twelve billion, one thousand, twelve".