223001231101021 has 2 divisors, whose sum is σ = 223001231101022. Its totient is φ = 223001231101020.

The previous prime is 223001231100997. The next prime is 223001231101079. The reversal of 223001231101021 is 120101132100322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149052599864100 + 73948631236921 = 12208710^2 + 8599339^2 .

It is a cyclic number.

It is not a de Polignac number, because 223001231101021 - 2²³ = 223001222712413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223001231101021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223001231101921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111500615550510 + 111500615550511.

It is an arithmetic number, because the mean of its divisors is an integer number (111500615550511).

Almost surely, 2^{223001231101021} is an apocalyptic number.

It is an amenable number.

223001231101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

223001231101021 is an equidigital number, since it uses as much as digits as its factorization.

223001231101021 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 223001231101021 its reverse (120101132100322), we get a palindrome (343102363201343).

The spelling of 223001231101021 in words is "two hundred twenty-three trillion, one billion, two hundred thirty-one million, one hundred one thousand, twenty-one".