212112210004 has 12 divisors (see below), whose sum is σ = 371318132500. Its totient is φ = 106021315008.

The previous prime is 212112209993. The next prime is 212112210019. The reversal of 212112210004 is 400012211212.

It can be written as a sum of positive squares in 2 ways, for example, as 105398921104 + 106713288900 = 324652^2 + 326670^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212112210004.

It is a congruent number.

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, 8683779 + ... + 8708170.

Almost surely, 2^212112210004 is an apocalyptic number.

It is an amenable number.

212112210004 is a deficient number, since it is larger than the sum of its proper divisors (159205922496).

212112210004 is a wasteful number, since it uses less digits than its factorization.

212112210004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17395002 (or 17395000 counting only the distinct ones).

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

Adding to 212112210004 its reverse (400012211212), we get a palindrome (612124421216).

The spelling of 212112210004 in words is "two hundred twelve billion, one hundred twelve million, two hundred ten thousand, four".