223220045233621 has 2 divisors, whose sum is σ = 223220045233622. Its totient is φ = 223220045233620.

The previous prime is 223220045233597. The next prime is 223220045233637. The reversal of 223220045233621 is 126332540022322.

It is a happy number.

223220045233621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184066066739025 + 39153978494596 = 13567095^2 + 6257314^2 .

It is a cyclic number.

It is not a de Polignac number, because 223220045233621 - 2¹⁵ = 223220045200853 is a prime.

It is a super-3 number, since 3×223220045233621³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223220045233121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111610022616810 + 111610022616811.

It is an arithmetic number, because the mean of its divisors is an integer number (111610022616811).

Almost surely, 2^{223220045233621} is an apocalyptic number.

It is an amenable number.

223220045233621 is a deficient number, since it is larger than the sum of its proper divisors (1).

223220045233621 is an equidigital number, since it uses as much as digits as its factorization.

223220045233621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 223220045233621 its reverse (126332540022322), we get a palindrome (349552585255943).

The spelling of 223220045233621 in words is "two hundred twenty-three trillion, two hundred twenty billion, forty-five million, two hundred thirty-three thousand, six hundred twenty-one".