23002130221 has 24 divisors (see below), whose sum is σ = 27322999704. Its totient is φ = 19301143680.

The previous prime is 23002130213. The next prime is 23002130233. The reversal of 23002130221 is 12203120032.

It can be written as a sum of positive squares in 4 ways, for example, as 9866448900 + 13135681321 = 99330^2 + 114611^2 .

It is not a de Polignac number, because 23002130221 - 2³ = 23002130213 is a prime.

23002130221 is a modest number, since divided by 130221 gives 23002 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 23002130195 and 23002130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23002130251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1187611 + ... + 1206823.

It is an arithmetic number, because the mean of its divisors is an integer number (1138458321).

Almost surely, 2^23002130221 is an apocalyptic number.

It is an amenable number.

23002130221 is a deficient number, since it is larger than the sum of its proper divisors (4320869483).

23002130221 is a wasteful number, since it uses less digits than its factorization.

23002130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19741 (or 19734 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 23002130221 its reverse (12203120032), we get a palindrome (35205250253).

The spelling of 23002130221 in words is "twenty-three billion, two million, one hundred thirty thousand, two hundred twenty-one".