23220211201221 has 8 divisors (see below), whose sum is σ = 30961569402400. Its totient is φ = 15479496900432.

The previous prime is 23220211201211. The next prime is 23220211201223. The reversal of 23220211201221 is 12210211202232.

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

It is not a de Polignac number, because 23220211201221 - 2⁵ = 23220211201189 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 (23220211201223) 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, 160890946 + ... + 161035203.

It is an arithmetic number, because the mean of its divisors is an integer number (3870196175300).

Almost surely, 2^{23220211201221} is an apocalyptic number.

It is an amenable number.

23220211201221 is a deficient number, since it is larger than the sum of its proper divisors (7741358201179).

23220211201221 is a wasteful number, since it uses less digits than its factorization.

23220211201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321950195.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 23220211201221 its reverse (12210211202232), we get a palindrome (35430422403453).

The spelling of 23220211201221 in words is "twenty-three trillion, two hundred twenty billion, two hundred eleven million, two hundred one thousand, two hundred twenty-one".