212303112312 has 64 divisors (see below), whose sum is σ = 542420282880. Its totient is φ = 69214758912.

The previous prime is 212303112289. The next prime is 212303112317. The reversal of 212303112312 is 213211303212.

It is a super-2 number, since 2×212303112312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303112317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609368 + ... + 1736280.

It is an arithmetic number, because the mean of its divisors is an integer number (8475316920).

Almost surely, 2^212303112312 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 212303112312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271210141440).

212303112312 is an abundant number, since it is smaller than the sum of its proper divisors (330117170568).

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

212303112312 is a wasteful number, since it uses less digits than its factorization.

212303112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128452 (or 128448 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212303112312 its reverse (213211303212), we get a palindrome (425514415524).

The spelling of 212303112312 in words is "two hundred twelve billion, three hundred three million, one hundred twelve thousand, three hundred twelve".