213211241440 has 24 divisors (see below), whose sum is σ = 503711558280. Its totient is φ = 85284496512.

The previous prime is 213211241437. The next prime is 213211241497. The reversal of 213211241440 is 44142112312.

It is a super-3 number, since 3×213211241440³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666284970 + ... + 666285289.

It is an arithmetic number, because the mean of its divisors is an integer number (20987981595).

Almost surely, 2^213211241440 is an apocalyptic number.

213211241440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213211241440 is an abundant number, since it is smaller than the sum of its proper divisors (290500316840).

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

213211241440 is a wasteful number, since it uses less digits than its factorization.

213211241440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332570274 (or 1332570266 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 213211241440 its reverse (44142112312), we get a palindrome (257353353752).

The spelling of 213211241440 in words is "two hundred thirteen billion, two hundred eleven million, two hundred forty-one thousand, four hundred forty".