223320120220021 has 4 divisors (see below), whose sum is σ = 243621949330944. Its totient is φ = 203018291109100.

The previous prime is 223320120219943. The next prime is 223320120220031. The reversal of 223320120220021 is 120022021023322.

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 a cyclic number.

It is not a de Polignac number, because 223320120220021 - 2²¹ = 223320118122869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223320120219974 and 223320120220001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223320120220031) 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, 10150914555445 + ... + 10150914555466.

It is an arithmetic number, because the mean of its divisors is an integer number (60905487332736).

Almost surely, 2^{223320120220021} is an apocalyptic number.

It is an amenable number.

223320120220021 is a deficient number, since it is larger than the sum of its proper divisors (20301829110923).

223320120220021 is a wasteful number, since it uses less digits than its factorization.

223320120220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20301829110922.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 223320120220021 its reverse (120022021023322), we get a palindrome (343342141243343).

The spelling of 223320120220021 in words is "two hundred twenty-three trillion, three hundred twenty billion, one hundred twenty million, two hundred twenty thousand, twenty-one".