213621240224 has 24 divisors (see below), whose sum is σ = 480647791008. Its totient is φ = 91551960000.

The previous prime is 213621240199. The next prime is 213621240263. The reversal of 213621240224 is 422042126312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476832902 + ... + 476833349.

It is an arithmetic number, because the mean of its divisors is an integer number (20026991292).

Almost surely, 2^213621240224 is an apocalyptic number.

It is an amenable number.

213621240224 is an abundant number, since it is smaller than the sum of its proper divisors (267026550784).

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

213621240224 is an equidigital number, since it uses as much as digits as its factorization.

213621240224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953666268 (or 953666260 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 213621240224 its reverse (422042126312), we get a palindrome (635663366536).

The spelling of 213621240224 in words is "two hundred thirteen billion, six hundred twenty-one million, two hundred forty thousand, two hundred twenty-four".