212043334440 has 192 divisors, whose sum is σ = 772287235200. Its totient is φ = 45615992832.

The previous prime is 212043334409. The next prime is 212043334469. The reversal of 212043334440 is 44433340212.

It is a happy number.

It is a super-2 number, since 2×212043334440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 212043334398 and 212043334407.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193975 + ... + 679494.

It is an arithmetic number, because the mean of its divisors is an integer number (4022329350).

Almost surely, 2^212043334440 is an apocalyptic number.

212043334440 is a gapful number since it is divisible by the number (20) 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 212043334440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386143617600).

212043334440 is an abundant number, since it is smaller than the sum of its proper divisors (560243900760).

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

212043334440 is a wasteful number, since it uses less digits than its factorization.

212043334440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873524 (or 873503 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 212043334440 its reverse (44433340212), we get a palindrome (256476674652).

The spelling of 212043334440 in words is "two hundred twelve billion, forty-three million, three hundred thirty-four thousand, four hundred forty".