213202223309 has 4 divisors (see below), whose sum is σ = 222471885216. Its totient is φ = 203932561404.

The previous prime is 213202223291. The next prime is 213202223317. The reversal of 213202223309 is 903322202312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213202223309 - 2²⁴ = 213185446093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213202223329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4634830919 + ... + 4634830964.

It is an arithmetic number, because the mean of its divisors is an integer number (55617971304).

Almost surely, 2^213202223309 is an apocalyptic number.

It is an amenable number.

213202223309 is a deficient number, since it is larger than the sum of its proper divisors (9269661907).

213202223309 is an equidigital number, since it uses as much as digits as its factorization.

213202223309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9269661906.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 213202223309 in words is "two hundred thirteen billion, two hundred two million, two hundred twenty-three thousand, three hundred nine".