210112123212 has 144 divisors (see below), whose sum is σ = 569622624480. Its totient is φ = 65177011200.

The previous prime is 210112123201. The next prime is 210112123223. The reversal of 210112123212 is 212321211012.

It is an interprime number because it is at equal distance from previous prime (210112123201) and next prime (210112123223).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3523162 + ... + 3582302.

It is an arithmetic number, because the mean of its divisors is an integer number (3955712670).

Almost surely, 2^210112123212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210112123212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284811312240).

210112123212 is an abundant number, since it is smaller than the sum of its proper divisors (359510501268).

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

210112123212 is a wasteful number, since it uses less digits than its factorization.

210112123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59304 (or 59299 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 210112123212 its reverse (212321211012), we get a palindrome (422433334224).

The spelling of 210112123212 in words is "two hundred ten billion, one hundred twelve million, one hundred twenty-three thousand, two hundred twelve".