213621240223 has 8 divisors (see below), whose sum is σ = 215672481792. Its totient is φ = 211571013336.

The previous prime is 213621240199. The next prime is 213621240263. The reversal of 213621240223 is 322042126312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213621240223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213621240191 and 213621240200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213621240263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172836 + ... + 676102.

It is an arithmetic number, because the mean of its divisors is an integer number (26959060224).

Almost surely, 2^213621240223 is an apocalyptic number.

213621240223 is a deficient number, since it is larger than the sum of its proper divisors (2051241569).

213621240223 is a wasteful number, since it uses less digits than its factorization.

213621240223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507341.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 213621240223 its reverse (322042126312), we get a palindrome (535663366535).

The spelling of 213621240223 in words is "two hundred thirteen billion, six hundred twenty-one million, two hundred forty thousand, two hundred twenty-three".