221101100041 has 2 divisors, whose sum is σ = 221101100042. Its totient is φ = 221101100040.

The previous prime is 221101099931. The next prime is 221101100063. The reversal of 221101100041 is 140001101122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154225071225 + 66876028816 = 392715^2 + 258604^2 .

It is a cyclic number.

It is not a de Polignac number, because 221101100041 - 2¹¹ = 221101097993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221101099994 and 221101100030.

It is not a weakly prime, because it can be changed into another prime (221101109041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550550020 + 110550550021.

It is an arithmetic number, because the mean of its divisors is an integer number (110550550021).

Almost surely, 2^221101100041 is an apocalyptic number.

It is an amenable number.

221101100041 is a deficient number, since it is larger than the sum of its proper divisors (1).

221101100041 is an equidigital number, since it uses as much as digits as its factorization.

221101100041 is an evil number, because the sum of its binary digits is even.

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

Adding to 221101100041 its reverse (140001101122), we get a palindrome (361102201163).

The spelling of 221101100041 in words is "two hundred twenty-one billion, one hundred one million, one hundred thousand, forty-one".