223021013101021 has 2 divisors, whose sum is σ = 223021013101022. Its totient is φ = 223021013101020.

The previous prime is 223021013101001. The next prime is 223021013101039. The reversal of 223021013101021 is 120101310120322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144070928732025 + 78950084368996 = 12002955^2 + 8885386^2 .

It is a cyclic number.

It is not a de Polignac number, because 223021013101021 - 2⁴⁷ = 82283524745693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223021013101021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223021013101001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111510506550510 + 111510506550511.

It is an arithmetic number, because the mean of its divisors is an integer number (111510506550511).

Almost surely, 2^{223021013101021} is an apocalyptic number.

It is an amenable number.

223021013101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

223021013101021 is an equidigital number, since it uses as much as digits as its factorization.

223021013101021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 223021013101021 its reverse (120101310120322), we get a palindrome (343122323221343).

The spelling of 223021013101021 in words is "two hundred twenty-three trillion, twenty-one billion, thirteen million, one hundred one thousand, twenty-one".