230021133221 has 12 divisors (see below), whose sum is σ = 252854369376. Its totient is φ = 209092568520.

The previous prime is 230021133191. The next prime is 230021133247. The reversal of 230021133221 is 122331120032.

It is a de Polignac number, because none of the positive numbers 2^k-230021133221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230021133193 and 230021133202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230021183221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1495706 + ... + 1642308.

It is an arithmetic number, because the mean of its divisors is an integer number (21071197448).

Almost surely, 2^230021133221 is an apocalyptic number.

It is an amenable number.

230021133221 is a deficient number, since it is larger than the sum of its proper divisors (22833236155).

230021133221 is a wasteful number, since it uses less digits than its factorization.

230021133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159592 (or 159581 counting only the distinct ones).

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

Adding to 230021133221 its reverse (122331120032), we get a palindrome (352352253253).

The spelling of 230021133221 in words is "two hundred thirty billion, twenty-one million, one hundred thirty-three thousand, two hundred twenty-one".