23130133221 has 16 divisors (see below), whose sum is σ = 33222438144. Its totient is φ = 14229668544.

The previous prime is 23130133219. The next prime is 23130133249. The reversal of 23130133221 is 12233103132.

It is not a de Polignac number, because 23130133221 - 2¹ = 23130133219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130133021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45835 + ... + 219911.

It is an arithmetic number, because the mean of its divisors is an integer number (2076402384).

Almost surely, 2^23130133221 is an apocalyptic number.

It is an amenable number.

23130133221 is a deficient number, since it is larger than the sum of its proper divisors (10092304923).

23130133221 is a wasteful number, since it uses less digits than its factorization.

23130133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177500.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23130133221 its reverse (12233103132), we get a palindrome (35363236353).

The spelling of 23130133221 in words is "twenty-three billion, one hundred thirty million, one hundred thirty-three thousand, two hundred twenty-one".