20130233411221 has 8 divisors (see below), whose sum is σ = 20143003775000. Its totient is φ = 20117464819200.

The previous prime is 20130233411207. The next prime is 20130233411269. The reversal of 20130233411221 is 12211433203102.

It can be written as a sum of positive squares in 4 ways, for example, as 1514339442225 + 18615893968996 = 1230585^2 + 4314614^2 .

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 20130233411221 - 2⁹ = 20130233410709 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 (20130233417221) 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, 22669405 + ... + 23540653.

It is an arithmetic number, because the mean of its divisors is an integer number (2517875471875).

Almost surely, 2^{20130233411221} is an apocalyptic number.

It is an amenable number.

20130233411221 is a deficient number, since it is larger than the sum of its proper divisors (12770363779).

20130233411221 is a wasteful number, since it uses less digits than its factorization.

20130233411221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885879.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20130233411221 its reverse (12211433203102), we get a palindrome (32341666614323).

The spelling of 20130233411221 in words is "twenty trillion, one hundred thirty billion, two hundred thirty-three million, four hundred eleven thousand, two hundred twenty-one".