221202121223 has 8 divisors (see below), whose sum is σ = 221361281568. Its totient is φ = 221043018784.

The previous prime is 221202121181. The next prime is 221202121247. The reversal of 221202121223 is 322121202122.

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

It is a cyclic number.

It is not a de Polignac number, because 221202121223 - 2¹⁰ = 221202120199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221202121195 and 221202121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202121253) 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, 9931886 + ... + 9954132.

It is an arithmetic number, because the mean of its divisors is an integer number (27670160196).

Almost surely, 2^221202121223 is an apocalyptic number.

221202121223 is a deficient number, since it is larger than the sum of its proper divisors (159160345).

221202121223 is a wasteful number, since it uses less digits than its factorization.

221202121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28953.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221202121223 its reverse (322121202122), we get a palindrome (543323323345).

The spelling of 221202121223 in words is "two hundred twenty-one billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty-three".