210001212312 has 16 divisors (see below), whose sum is σ = 525003030840. Its totient is φ = 70000404096.

The previous prime is 210001212301. The next prime is 210001212389. The reversal of 210001212312 is 213212100012.

It is a junction number, because it is equal to n+sod(n) for n = 210001212291 and 210001212300.

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, 4375025233 + ... + 4375025280.

Almost surely, 2^210001212312 is an apocalyptic number.

It is an amenable number.

210001212312 is an abundant number, since it is smaller than the sum of its proper divisors (315001818528).

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

210001212312 is a wasteful number, since it uses less digits than its factorization.

210001212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8750050522 (or 8750050518 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 210001212312 its reverse (213212100012), we get a palindrome (423213312324).

The spelling of 210001212312 in words is "two hundred ten billion, one million, two hundred twelve thousand, three hundred twelve".