23121212111330 has 16 divisors (see below), whose sum is σ = 41625469275264. Its totient is φ = 9246865405680.

The previous prime is 23121212111317. The next prime is 23121212111369. The reversal of 23121212111330 is 3311121212132.

It is a happy number.

It is a super-2 number, since 2×23121212111330² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23121212111296 and 23121212111305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202369892 + ... + 202484111.

It is an arithmetic number, because the mean of its divisors is an integer number (2601591829704).

Almost surely, 2^{23121212111330} is an apocalyptic number.

23121212111330 is a deficient number, since it is larger than the sum of its proper divisors (18504257163934).

23121212111330 is a wasteful number, since it uses less digits than its factorization.

23121212111330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404859721.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 23121212111330 its reverse (3311121212132), we get a palindrome (26432333323462).

The spelling of 23121212111330 in words is "twenty-three trillion, one hundred twenty-one billion, two hundred twelve million, one hundred eleven thousand, three hundred thirty".