221001104101 has 2 divisors, whose sum is σ = 221001104102. Its totient is φ = 221001104100.

The previous prime is 221001104089. The next prime is 221001104119. The reversal of 221001104101 is 101401100122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184234959076 + 36766145025 = 429226^2 + 191745^2 .

It is a cyclic number.

It is not a de Polignac number, because 221001104101 - 2⁵ = 221001104069 is a prime.

It is a super-2 number, since 2×221001104101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221001108101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500552050 + 110500552051.

It is an arithmetic number, because the mean of its divisors is an integer number (110500552051).

Almost surely, 2^221001104101 is an apocalyptic number.

It is an amenable number.

221001104101 is a deficient number, since it is larger than the sum of its proper divisors (1).

221001104101 is an equidigital number, since it uses as much as digits as its factorization.

221001104101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221001104101 its reverse (101401100122), we get a palindrome (322402204223).

The spelling of 221001104101 in words is "two hundred twenty-one billion, one million, one hundred four thousand, one hundred one".