221233210013 has 8 divisors (see below), whose sum is σ = 222982768632. Its totient is φ = 219485604096.

The previous prime is 221233209971. The next prime is 221233210031. The reversal of 221233210013 is 310012332122.

It can be written as a sum of positive squares in 4 ways, for example, as 13842228409 + 207390981604 = 117653^2 + 455402^2 .

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-221233210013 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 (221233210043) 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, 260270 + ... + 714287.

It is an arithmetic number, because the mean of its divisors is an integer number (27872846079).

Almost surely, 2^221233210013 is an apocalyptic number.

It is an amenable number.

221233210013 is a deficient number, since it is larger than the sum of its proper divisors (1749558619).

221233210013 is a wasteful number, since it uses less digits than its factorization.

221233210013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976351.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221233210013 its reverse (310012332122), we get a palindrome (531245542135).

The spelling of 221233210013 in words is "two hundred twenty-one billion, two hundred thirty-three million, two hundred ten thousand, thirteen".