23321332021 has 8 divisors (see below), whose sum is σ = 25117648920. Its totient is φ = 21525353472.

The previous prime is 23321332019. The next prime is 23321332031. The reversal of 23321332021 is 12023312332.

It can be written as a sum of positive squares in 4 ways, for example, as 1272348900 + 22048983121 = 35670^2 + 148489^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23321332021 - 2¹ = 23321332019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23321331983 and 23321332001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321332031) 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, 68901 + ... + 226693.

It is an arithmetic number, because the mean of its divisors is an integer number (3139706115).

Almost surely, 2^23321332021 is an apocalyptic number.

It is an amenable number.

23321332021 is a deficient number, since it is larger than the sum of its proper divisors (1796316899).

23321332021 is a wasteful number, since it uses less digits than its factorization.

23321332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169175.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 23321332021 its reverse (12023312332), we get a palindrome (35344644353).

The spelling of 23321332021 in words is "twenty-three billion, three hundred twenty-one million, three hundred thirty-two thousand, twenty-one".