23112420251221 has 8 divisors (see below), whose sum is σ = 26468433169280. Its totient is φ = 19769966982288.

The previous prime is 23112420251213. The next prime is 23112420251233. The reversal of 23112420251221 is 12215202421132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23112420251221 - 2³ = 23112420251213 is a prime.

It is a super-3 number, since 3×23112420251221³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23112420251221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23112420251521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3389908626 + ... + 3389915443.

It is an arithmetic number, because the mean of its divisors is an integer number (3308554146160).

Almost surely, 2^{23112420251221} is an apocalyptic number.

It is an amenable number.

23112420251221 is a deficient number, since it is larger than the sum of its proper divisors (3356012918059).

23112420251221 is an equidigital number, since it uses as much as digits as its factorization.

23112420251221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6779824563.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 23112420251221 its reverse (12215202421132), we get a palindrome (35327622672353).

The spelling of 23112420251221 in words is "twenty-three trillion, one hundred twelve billion, four hundred twenty million, two hundred fifty-one thousand, two hundred twenty-one".