23403011520221 has 64 divisors (see below), whose sum is σ = 25578265743360. Its totient is φ = 21358681344000.

The previous prime is 23403011520193. The next prime is 23403011520233. The reversal of 23403011520221 is 12202511030432.

It is a cyclic number.

It is not a de Polignac number, because 23403011520221 - 2³⁰ = 23401937778397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23403011420221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6665623856 + ... + 6665627366.

It is an arithmetic number, because the mean of its divisors is an integer number (399660402240).

Almost surely, 2^{23403011520221} is an apocalyptic number.

It is an amenable number.

23403011520221 is a deficient number, since it is larger than the sum of its proper divisors (2175254223139).

23403011520221 is a wasteful number, since it uses less digits than its factorization.

23403011520221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 23403011520221 its reverse (12202511030432), we get a palindrome (35605522550653).

The spelling of 23403011520221 in words is "twenty-three trillion, four hundred three billion, eleven million, five hundred twenty thousand, two hundred twenty-one".