212133324340 has 48 divisors (see below), whose sum is σ = 516718806912. Its totient is φ = 71645878656.

The previous prime is 212133324311. The next prime is 212133324349. The reversal of 212133324340 is 43423331212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 212133324299 and 212133324308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133324349) 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, 11298367 + ... + 11317126.

It is an arithmetic number, because the mean of its divisors is an integer number (10764975144).

Almost surely, 2^212133324340 is an apocalyptic number.

212133324340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212133324340 is an abundant number, since it is smaller than the sum of its proper divisors (304585482572).

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

212133324340 is a wasteful number, since it uses less digits than its factorization.

212133324340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22615576 (or 22615574 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 212133324340 its reverse (43423331212), we get a palindrome (255556655552).

The spelling of 212133324340 in words is "two hundred twelve billion, one hundred thirty-three million, three hundred twenty-four thousand, three hundred forty".