12122022321 has 24 divisors (see below), whose sum is σ = 17951826984. Its totient is φ = 7877571840.

The previous prime is 12122022317. The next prime is 12122022383. The reversal of 12122022321 is 12322022121.

12122022321 is a `hidden beast` number, since 121 + 220 + 2 + 2 + 321 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 578883600 + 11543138721 = 24060^2 + 107439^2 .

It is not a de Polignac number, because 12122022321 - 2² = 12122022317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122022294 and 12122022303.

It is not an unprimeable number, because it can be changed into a prime (12122022221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443175 + ... + 469731.

It is an arithmetic number, because the mean of its divisors is an integer number (747992791).

Almost surely, 2^12122022321 is an apocalyptic number.

It is an amenable number.

12122022321 is a deficient number, since it is larger than the sum of its proper divisors (5829804663).

12122022321 is a wasteful number, since it uses less digits than its factorization.

12122022321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27841 (or 27838 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12122022321 its reverse (12322022121), we get a palindrome (24444044442).

The spelling of 12122022321 in words is "twelve billion, one hundred twenty-two million, twenty-two thousand, three hundred twenty-one".