213223352240 has 20 divisors (see below), whose sum is σ = 495744294144. Its totient is φ = 85289340864.

The previous prime is 213223352239. The next prime is 213223352249. The reversal of 213223352240 is 42253322312.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×213223352240² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213223352249) by changing a digit.

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, 1332645872 + ... + 1332646031.

Almost surely, 2^213223352240 is an apocalyptic number.

213223352240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213223352240 is an abundant number, since it is smaller than the sum of its proper divisors (282520941904).

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

213223352240 is a wasteful number, since it uses less digits than its factorization.

213223352240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665291916 (or 2665291910 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 213223352240 its reverse (42253322312), we get a palindrome (255476674552).

The spelling of 213223352240 in words is "two hundred thirteen billion, two hundred twenty-three million, three hundred fifty-two thousand, two hundred forty".