221000201110123 has 2 divisors, whose sum is σ = 221000201110124. Its totient is φ = 221000201110122.

The previous prime is 221000201110081. The next prime is 221000201110127. The reversal of 221000201110123 is 321011102000122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221000201110123 - 2¹³ = 221000201101931 is a prime.

It is a super-2 number, since 2×221000201110123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221000201110097 and 221000201110106.

It is not a weakly prime, because it can be changed into another prime (221000201110127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500100555061 + 110500100555062.

It is an arithmetic number, because the mean of its divisors is an integer number (110500100555062).

Almost surely, 2^{221000201110123} is an apocalyptic number.

221000201110123 is a deficient number, since it is larger than the sum of its proper divisors (1).

221000201110123 is an equidigital number, since it uses as much as digits as its factorization.

221000201110123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221000201110123 its reverse (321011102000122), we get a palindrome (542011303110245).

The spelling of 221000201110123 in words is "two hundred twenty-one trillion, two hundred one million, one hundred ten thousand, one hundred twenty-three".