23230213221 has 16 divisors (see below), whose sum is σ = 31355444736. Its totient is φ = 15295998576.

The previous prime is 23230213213. The next prime is 23230213271. The reversal of 23230213221 is 12231203232.

It is a happy number.

It is not a de Polignac number, because 23230213221 - 2³ = 23230213213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23230213271) 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, 1075696 + ... + 1097078.

It is an arithmetic number, because the mean of its divisors is an integer number (1959715296).

Almost surely, 2^23230213221 is an apocalyptic number.

It is an amenable number.

23230213221 is a deficient number, since it is larger than the sum of its proper divisors (8125231515).

23230213221 is a wasteful number, since it uses less digits than its factorization.

23230213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25832.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23230213221 its reverse (12231203232), we get a palindrome (35461416453).

The spelling of 23230213221 in words is "twenty-three billion, two hundred thirty million, two hundred thirteen thousand, two hundred twenty-one".