223212111301321 has 2 divisors, whose sum is σ = 223212111301322. Its totient is φ = 223212111301320.

The previous prime is 223212111301307. The next prime is 223212111301339. The reversal of 223212111301321 is 123103111212322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119673447895296 + 103538663406025 = 10939536^2 + 10175395^2 .

It is a cyclic number.

It is not a de Polignac number, because 223212111301321 - 2¹⁷ = 223212111170249 is a prime.

It is a super-3 number, since 3×223212111301321³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223212111301721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111606055650660 + 111606055650661.

It is an arithmetic number, because the mean of its divisors is an integer number (111606055650661).

Almost surely, 2^{223212111301321} is an apocalyptic number.

It is an amenable number.

223212111301321 is a deficient number, since it is larger than the sum of its proper divisors (1).

223212111301321 is an equidigital number, since it uses as much as digits as its factorization.

223212111301321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 223212111301321 its reverse (123103111212322), we get a palindrome (346315222513643).

The spelling of 223212111301321 in words is "two hundred twenty-three trillion, two hundred twelve billion, one hundred eleven million, three hundred one thousand, three hundred twenty-one".