230013111221 has 4 divisors (see below), whose sum is σ = 243543294252. Its totient is φ = 216482928192.

The previous prime is 230013111109. The next prime is 230013111239. The reversal of 230013111221 is 122111310032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 207667047025 + 22346064196 = 455705^2 + 149486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230013111221 is a prime.

It is a super-2 number, since 2×230013111221² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 13530183013 = 230013111221 / (2 + 3 + 0 + 0 + 1 + 3 + 1 + 1 + 1 + 2 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230013111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230013110221) 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, 6765091490 + ... + 6765091523.

It is an arithmetic number, because the mean of its divisors is an integer number (60885823563).

Almost surely, 2^230013111221 is an apocalyptic number.

It is an amenable number.

230013111221 is a deficient number, since it is larger than the sum of its proper divisors (13530183031).

230013111221 is a wasteful number, since it uses less digits than its factorization.

230013111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13530183030.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 230013111221 its reverse (122111310032), we get a palindrome (352124421253).

The spelling of 230013111221 in words is "two hundred thirty billion, thirteen million, one hundred eleven thousand, two hundred twenty-one".