221111102041 has 2 divisors, whose sum is σ = 221111102042. Its totient is φ = 221111102040.

The previous prime is 221111101949. The next prime is 221111102063. The reversal of 221111102041 is 140201111122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216810365641 + 4300736400 = 465629^2 + 65580^2 .

It is a cyclic number.

It is not a de Polignac number, because 221111102041 - 2²⁷ = 220976884313 is a prime.

It is not a weakly prime, because it can be changed into another prime (221111102741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555551020 + 110555551021.

It is an arithmetic number, because the mean of its divisors is an integer number (110555551021).

Almost surely, 2^221111102041 is an apocalyptic number.

It is an amenable number.

221111102041 is a deficient number, since it is larger than the sum of its proper divisors (1).

221111102041 is an equidigital number, since it uses as much as digits as its factorization.

221111102041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221111102041 its reverse (140201111122), we get a palindrome (361312213163).

The spelling of 221111102041 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred two thousand, forty-one".