221434001213 has 8 divisors (see below), whose sum is σ = 221865456120. Its totient is φ = 221002629120.

The previous prime is 221434001209. The next prime is 221434001237. The reversal of 221434001213 is 312100434122.

It can be written as a sum of positive squares in 4 ways, for example, as 9817440889 + 211616560324 = 99083^2 + 460018^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 221434001213 - 2² = 221434001209 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 (221434001813) 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, 9493181 + ... + 9516477.

It is an arithmetic number, because the mean of its divisors is an integer number (27733182015).

Almost surely, 2^221434001213 is an apocalyptic number.

It is an amenable number.

221434001213 is a deficient number, since it is larger than the sum of its proper divisors (431454907).

221434001213 is a wasteful number, since it uses less digits than its factorization.

221434001213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41407.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221434001213 its reverse (312100434122), we get a palindrome (533534435335).

The spelling of 221434001213 in words is "two hundred twenty-one billion, four hundred thirty-four million, one thousand, two hundred thirteen".