223223130021 has 4 divisors (see below), whose sum is σ = 297630840032. Its totient is φ = 148815420012.

The previous prime is 223223129989. The next prime is 223223130041. The reversal of 223223130021 is 120031322322.

It is a happy number.

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 not a de Polignac number, because 223223130021 - 2⁵ = 223223129989 is a prime.

It is a super-3 number, since 3×223223130021³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223223130021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223223130041) 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, 37203855001 + ... + 37203855006.

It is an arithmetic number, because the mean of its divisors is an integer number (74407710008).

Almost surely, 2^223223130021 is an apocalyptic number.

It is an amenable number.

223223130021 is a deficient number, since it is larger than the sum of its proper divisors (74407710011).

223223130021 is an equidigital number, since it uses as much as digits as its factorization.

223223130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74407710010.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 223223130021 its reverse (120031322322), we get a palindrome (343254452343).

The spelling of 223223130021 in words is "two hundred twenty-three billion, two hundred twenty-three million, one hundred thirty thousand, twenty-one".