213220413240 has 64 divisors (see below), whose sum is σ = 639697888800. Its totient is φ = 56855519232.

The previous prime is 213220413229. The next prime is 213220413269. The reversal of 213220413240 is 42314022312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 213220413240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2644564 + ... + 2723996.

Almost surely, 2^213220413240 is an apocalyptic number.

213220413240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213220413240 is an abundant number, since it is smaller than the sum of its proper divisors (426477475560).

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

213220413240 is a wasteful number, since it uses less digits than its factorization.

213220413240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101816 (or 101812 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 213220413240 its reverse (42314022312), we get a palindrome (255534435552).

The spelling of 213220413240 in words is "two hundred thirteen billion, two hundred twenty million, four hundred thirteen thousand, two hundred forty".