23229567824821 has 4 divisors (see below), whose sum is σ = 23455097609632. Its totient is φ = 23004038040012.

The previous prime is 23229567824797. The next prime is 23229567824849. The reversal of 23229567824821 is 12842876592232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23229567824821 - 2¹³ = 23229567816629 is a prime.

It is a super-2 number, since 2×23229567824821² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23229567824821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23229567894821) 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, 112764892251 + ... + 112764892456.

It is an arithmetic number, because the mean of its divisors is an integer number (5863774402408).

Almost surely, 2^{23229567824821} is an apocalyptic number.

It is an amenable number.

23229567824821 is a deficient number, since it is larger than the sum of its proper divisors (225529784811).

23229567824821 is a wasteful number, since it uses less digits than its factorization.

23229567824821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225529784810.

The product of its digits is 46448640, while the sum is 61.

The spelling of 23229567824821 in words is "twenty-three trillion, two hundred twenty-nine billion, five hundred sixty-seven million, eight hundred twenty-four thousand, eight hundred twenty-one".