23210032202221 has 4 divisors (see below), whose sum is σ = 23212687517244. Its totient is φ = 23207376887200.

The previous prime is 23210032202219. The next prime is 23210032202297. The reversal of 23210032202221 is 12220223001232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11955758444100 + 11254273758121 = 3457710^2 + 3354739^2 .

It is a cyclic number.

It is not a de Polignac number, because 23210032202221 - 2¹ = 23210032202219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23210032202192 and 23210032202201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23210032205221) 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, 1327644400 + ... + 1327661881.

It is an arithmetic number, because the mean of its divisors is an integer number (5803171879311).

Almost surely, 2^{23210032202221} is an apocalyptic number.

It is an amenable number.

23210032202221 is a deficient number, since it is larger than the sum of its proper divisors (2655315023).

23210032202221 is an equidigital number, since it uses as much as digits as its factorization.

23210032202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655315022.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 23210032202221 its reverse (12220223001232), we get a palindrome (35430255203453).

The spelling of 23210032202221 in words is "twenty-three trillion, two hundred ten billion, thirty-two million, two hundred two thousand, two hundred twenty-one".