223202221221 has 8 divisors (see below), whose sum is σ = 340117670464. Its totient is φ = 127544126400.

The previous prime is 223202221199. The next prime is 223202221237. The reversal of 223202221221 is 122122202322.

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

It is not a de Polignac number, because 223202221221 - 2⁵ = 223202221189 is a prime.

It is a super-3 number, since 3×223202221221³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10628677201 = 223202221221 / (2 + 2 + 3 + 2 + 0 + 2 + 2 + 2 + 1 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223202221241) 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, 5314338580 + ... + 5314338621.

It is an arithmetic number, because the mean of its divisors is an integer number (42514708808).

Almost surely, 2^223202221221 is an apocalyptic number.

223202221221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

223202221221 is a deficient number, since it is larger than the sum of its proper divisors (116915449243).

223202221221 is a wasteful number, since it uses less digits than its factorization.

223202221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10628677211.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 223202221221 its reverse (122122202322), we get a palindrome (345324423543).

The spelling of 223202221221 in words is "two hundred twenty-three billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".