23033221321 has 12 divisors (see below), whose sum is σ = 25541571636. Its totient is φ = 20753976320.

The previous prime is 23033221283. The next prime is 23033221391. The reversal of 23033221321 is 12312233032.

It can be written as a sum of positive squares in 2 ways, for example, as 2395025721 + 20638195600 = 48939^2 + 143660^2 .

It is not a de Polignac number, because 23033221321 - 2¹³ = 23033213129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23033221292 and 23033221301.

It is not an unprimeable number, because it can be changed into a prime (23033221391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 828616 + ... + 855961.

It is an arithmetic number, because the mean of its divisors is an integer number (2128464303).

Almost surely, 2^23033221321 is an apocalyptic number.

It is an amenable number.

23033221321 is a deficient number, since it is larger than the sum of its proper divisors (2508350315).

23033221321 is a wasteful number, since it uses less digits than its factorization.

23033221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684712 (or 1684701 counting only the distinct ones).

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

Adding to 23033221321 its reverse (12312233032), we get a palindrome (35345454353).

The spelling of 23033221321 in words is "twenty-three billion, thirty-three million, two hundred twenty-one thousand, three hundred twenty-one".