212342231424 has 128 divisors (see below), whose sum is σ = 567218026080. Its totient is φ = 70382305280.

The previous prime is 212342231401. The next prime is 212342231471. The reversal of 212342231424 is 424132243212.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×212342231424² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 212342231391 and 212342231400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60100762 + ... + 60104294.

Almost surely, 2^212342231424 is an apocalyptic number.

212342231424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212342231424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283609013040).

212342231424 is an abundant number, since it is smaller than the sum of its proper divisors (354875794656).

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

212342231424 is a wasteful number, since it uses less digits than its factorization.

212342231424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388 (or 4376 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 212342231424 its reverse (424132243212), we get a palindrome (636474474636).

The spelling of 212342231424 in words is "two hundred twelve billion, three hundred forty-two million, two hundred thirty-one thousand, four hundred twenty-four".