23221332121 has 8 divisors (see below), whose sum is σ = 26478623304. Its totient is φ = 20174188800.

The previous prime is 23221332109. The next prime is 23221332191. The reversal of 23221332121 is 12123312232.

It can be written as a sum of positive squares in 4 ways, for example, as 5435375625 + 17785956496 = 73725^2 + 133364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23221332121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23221332092 and 23221332101.

It is not an unprimeable number, because it can be changed into a prime (23221332191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52536730 + ... + 52537171.

It is an arithmetic number, because the mean of its divisors is an integer number (3309827913).

Almost surely, 2^23221332121 is an apocalyptic number.

It is an amenable number.

23221332121 is a deficient number, since it is larger than the sum of its proper divisors (3257291183).

23221332121 is a wasteful number, since it uses less digits than its factorization.

23221332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105073931.

The product of its digits is 864, while the sum is 22.

Adding to 23221332121 its reverse (12123312232), we get a palindrome (35344644353).

The spelling of 23221332121 in words is "twenty-three billion, two hundred twenty-one million, three hundred thirty-two thousand, one hundred twenty-one".