212112023112 has 96 divisors (see below), whose sum is σ = 649905590880. Its totient is φ = 64276364160.

The previous prime is 212112023111. The next prime is 212112023113. The reversal of 212112023112 is 211320211212.

It is an interprime number because it is at equal distance from previous prime (212112023111) and next prime (212112023113).

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

It is not an unprimeable number, because it can be changed into a prime (212112023111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4938213 + ... + 4980980.

It is an arithmetic number, because the mean of its divisors is an integer number (6769849905).

Almost surely, 2^212112023112 is an apocalyptic number.

212112023112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212112023112 is an abundant number, since it is smaller than the sum of its proper divisors (437793567768).

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

212112023112 is a wasteful number, since it uses less digits than its factorization.

212112023112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9919225 (or 9919209 counting only the distinct ones).

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

Adding to 212112023112 its reverse (211320211212), we get a palindrome (423432234324).

The spelling of 212112023112 in words is "two hundred twelve billion, one hundred twelve million, twenty-three thousand, one hundred twelve".