23121234443225 has 6 divisors (see below), whose sum is σ = 28670330709630. Its totient is φ = 18496987554560.

The previous prime is 23121234443189. The next prime is 23121234443311. The reversal of 23121234443225 is 52234443212132.

It can be written as a sum of positive squares in 3 ways, for example, as 4282197006409 + 18839037436816 = 2069347^2 + 4340396^2 .

It is not a de Polignac number, because 23121234443225 - 2³⁰ = 23120160701401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462424688840 + ... + 462424688889.

It is an arithmetic number, because the mean of its divisors is an integer number (4778388451605).

Almost surely, 2^{23121234443225} is an apocalyptic number.

23121234443225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23121234443225 is a deficient number, since it is larger than the sum of its proper divisors (5549096266405).

23121234443225 is an equidigital number, since it uses as much as digits as its factorization.

23121234443225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924849377739 (or 924849377734 counting only the distinct ones).

The product of its digits is 276480, while the sum is 38.

Adding to 23121234443225 its reverse (52234443212132), we get a palindrome (75355677655357).

The spelling of 23121234443225 in words is "twenty-three trillion, one hundred twenty-one billion, two hundred thirty-four million, four hundred forty-three thousand, two hundred twenty-five".