23105502124321 has 4 divisors (see below), whose sum is σ = 23105520493444. Its totient is φ = 23105483755200.

The previous prime is 23105502124301. The next prime is 23105502124337. The reversal of 23105502124321 is 12342120550132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3346045808400 + 19759456315921 = 1829220^2 + 4445161^2 .

It is a cyclic number.

It is not a de Polignac number, because 23105502124321 - 2³⁵ = 23071142385953 is a prime.

It is a super-2 number, since 2×23105502124321² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23105502124301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7147140 + ... + 9863701.

It is an arithmetic number, because the mean of its divisors is an integer number (5776380123361).

Almost surely, 2^{23105502124321} is an apocalyptic number.

It is an amenable number.

23105502124321 is a deficient number, since it is larger than the sum of its proper divisors (18369123).

23105502124321 is a wasteful number, since it uses less digits than its factorization.

23105502124321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18369122.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 23105502124321 its reverse (12342120550132), we get a palindrome (35447622674453).

The spelling of 23105502124321 in words is "twenty-three trillion, one hundred five billion, five hundred two million, one hundred twenty-four thousand, three hundred twenty-one".