223021322102221 has 4 divisors (see below), whose sum is σ = 223046288116092. Its totient is φ = 222996356088352.

The previous prime is 223021322102207. The next prime is 223021322102233. The reversal of 223021322102221 is 122201223120322.

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 19046197998025 + 203975124104196 = 4364195^2 + 14281986^2 .

It is a cyclic number.

It is not a de Polignac number, because 223021322102221 - 2⁷ = 223021322102093 is a prime.

It is a super-2 number, since 2×223021322102221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223021382102221) 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, 12482993536 + ... + 12483011401.

It is an arithmetic number, because the mean of its divisors is an integer number (55761572029023).

Almost surely, 2^{223021322102221} is an apocalyptic number.

It is an amenable number.

223021322102221 is a deficient number, since it is larger than the sum of its proper divisors (24966013871).

223021322102221 is an equidigital number, since it uses as much as digits as its factorization.

223021322102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24966013870.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 223021322102221 its reverse (122201223120322), we get a palindrome (345222545222543).

The spelling of 223021322102221 in words is "two hundred twenty-three trillion, twenty-one billion, three hundred twenty-two million, one hundred two thousand, two hundred twenty-one".