23220200221 has 4 divisors (see below), whose sum is σ = 23220533952. Its totient is φ = 23219866492.

The previous prime is 23220200209. The next prime is 23220200249. The reversal of 23220200221 is 12200202232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23220200221 - 2¹³ = 23220192029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23220200195 and 23220200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220204221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18565 + ... + 216298.

It is an arithmetic number, because the mean of its divisors is an integer number (5805133488).

Almost surely, 2^23220200221 is an apocalyptic number.

It is an amenable number.

23220200221 is a deficient number, since it is larger than the sum of its proper divisors (333731).

23220200221 is an equidigital number, since it uses as much as digits as its factorization.

23220200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333730.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 23220200221 its reverse (12200202232), we get a palindrome (35420402453).

The spelling of 23220200221 in words is "twenty-three billion, two hundred twenty million, two hundred thousand, two hundred twenty-one".