221234430013 has 2 divisors, whose sum is σ = 221234430014. Its totient is φ = 221234430012.

The previous prime is 221234430007. The next prime is 221234430019. The reversal of 221234430013 is 310034432122.

It is a balanced prime because it is at equal distance from previous prime (221234430007) and next prime (221234430019).

It can be written as a sum of positive squares in only one way, i.e., 220108290649 + 1126139364 = 469157^2 + 33558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221234430013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221234430013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221234430019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110617215006 + 110617215007.

It is an arithmetic number, because the mean of its divisors is an integer number (110617215007).

Almost surely, 2^221234430013 is an apocalyptic number.

It is an amenable number.

221234430013 is a deficient number, since it is larger than the sum of its proper divisors (1).

221234430013 is an equidigital number, since it uses as much as digits as its factorization.

221234430013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 221234430013 its reverse (310034432122), we get a palindrome (531268862135).

The spelling of 221234430013 in words is "two hundred twenty-one billion, two hundred thirty-four million, four hundred thirty thousand, thirteen".