210001212112 has 20 divisors (see below), whose sum is σ = 415534314816. Its totient is φ = 102766550240.

The previous prime is 210001212073. The next prime is 210001212151. The reversal of 210001212112 is 211212100012.

It is an interprime number because it is at equal distance from previous prime (210001212073) and next prime (210001212151).

It is a junction number, because it is equal to n+sod(n) for n = 210001212092 and 210001212101.

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, 139627714 + ... + 139629217.

Almost surely, 2^210001212112 is an apocalyptic number.

It is an amenable number.

210001212112 is a deficient number, since it is larger than the sum of its proper divisors (205533102704).

210001212112 is a wasteful number, since it uses less digits than its factorization.

210001212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279256986 (or 279256980 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210001212112 its reverse (211212100012), we get a palindrome (421213312124).

The spelling of 210001212112 in words is "two hundred ten billion, one million, two hundred twelve thousand, one hundred twelve".