223220121223361 has 2 divisors, whose sum is σ = 223220121223362. Its totient is φ = 223220121223360.

The previous prime is 223220121223327. The next prime is 223220121223399. The reversal of 223220121223361 is 163322121022322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197871514355761 + 25348606867600 = 14066681^2 + 5034740^2 .

It is a cyclic number.

It is not a de Polignac number, because 223220121223361 - 2¹⁸ = 223220120961217 is a prime.

It is a super-3 number, since 3×223220121223361³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223220121223301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111610060611680 + 111610060611681.

It is an arithmetic number, because the mean of its divisors is an integer number (111610060611681).

Almost surely, 2^{223220121223361} is an apocalyptic number.

It is an amenable number.

223220121223361 is a deficient number, since it is larger than the sum of its proper divisors (1).

223220121223361 is an equidigital number, since it uses as much as digits as its factorization.

223220121223361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 223220121223361 its reverse (163322121022322), we get a palindrome (386542242245683).

The spelling of 223220121223361 in words is "two hundred twenty-three trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-three thousand, three hundred sixty-one".