23002243532221 has 4 divisors (see below), whose sum is σ = 23008666949244. Its totient is φ = 22995820115200.

The previous prime is 23002243532101. The next prime is 23002243532243. The reversal of 23002243532221 is 12223534220032.

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 21051992180025 + 1950251352196 = 4588245^2 + 1396514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23002243532221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23002243532291) 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, 3211703140 + ... + 3211710301.

It is an arithmetic number, because the mean of its divisors is an integer number (5752166737311).

Almost surely, 2^{23002243532221} is an apocalyptic number.

It is an amenable number.

23002243532221 is a deficient number, since it is larger than the sum of its proper divisors (6423417023).

23002243532221 is an equidigital number, since it uses as much as digits as its factorization.

23002243532221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423417022.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 23002243532221 its reverse (12223534220032), we get a palindrome (35225777752253).

The spelling of 23002243532221 in words is "twenty-three trillion, two billion, two hundred forty-three million, five hundred thirty-two thousand, two hundred twenty-one".