23345450310221 has 4 divisors (see below), whose sum is σ = 25141254180252. Its totient is φ = 21549646440192.

The previous prime is 23345450310181. The next prime is 23345450310253. The reversal of 23345450310221 is 12201305454332.

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 15548148016996 + 7797302293225 = 3943114^2 + 2792365^2 .

It is not a de Polignac number, because 23345450310221 - 2²² = 23345446115917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23345450310821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 897901934996 + ... + 897901935021.

It is an arithmetic number, because the mean of its divisors is an integer number (6285313545063).

Almost surely, 2^{23345450310221} is an apocalyptic number.

It is an amenable number.

23345450310221 is a deficient number, since it is larger than the sum of its proper divisors (1795803870031).

23345450310221 is a wasteful number, since it uses less digits than its factorization.

23345450310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795803870030.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 23345450310221 its reverse (12201305454332), we get a palindrome (35546755764553).

The spelling of 23345450310221 in words is "twenty-three trillion, three hundred forty-five billion, four hundred fifty million, three hundred ten thousand, two hundred twenty-one".