212313333440 has 224 divisors, whose sum is σ = 554476212864. Its totient is φ = 76960235520.

The previous prime is 212313333413. The next prime is 212313333451. The reversal of 212313333440 is 44333313212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75906122 + ... + 75908918.

It is an arithmetic number, because the mean of its divisors is an integer number (2475340236).

Almost surely, 2^212313333440 is an apocalyptic number.

212313333440 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 212313333440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277238106432).

212313333440 is an abundant number, since it is smaller than the sum of its proper divisors (342162879424).

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

212313333440 is a wasteful number, since it uses less digits than its factorization.

212313333440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155 (or 3145 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 212313333440 its reverse (44333313212), we get a palindrome (256646646652).

The spelling of 212313333440 in words is "two hundred twelve billion, three hundred thirteen million, three hundred thirty-three thousand, four hundred forty".