2221171101101 has 2 divisors, whose sum is σ = 2221171101102. Its totient is φ = 2221171101100.

The previous prime is 2221171101091. The next prime is 2221171101119. The reversal of 2221171101101 is 1011011711222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1545036570025 + 676134531076 = 1242995^2 + 822274^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221171101101 - 2²² = 2221166906797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221171101151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110585550550 + 1110585550551.

It is an arithmetic number, because the mean of its divisors is an integer number (1110585550551).

Almost surely, 2^{2221171101101} is an apocalyptic number.

It is an amenable number.

2221171101101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221171101101 is an equidigital number, since it uses as much as digits as its factorization.

2221171101101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 2221171101101 its reverse (1011011711222), we get a palindrome (3232182812323).

The spelling of 2221171101101 in words is "two trillion, two hundred twenty-one billion, one hundred seventy-one million, one hundred one thousand, one hundred one".