2221101101 has 2 divisors, whose sum is σ = 2221101102. Its totient is φ = 2221101100.

The previous prime is 2221101089. The next prime is 2221101133. The reversal of 2221101101 is 1011011222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1298521225 + 922579876 = 36035^2 + 30374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221101101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221101161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110550550 + 1110550551.

It is an arithmetic number, because the mean of its divisors is an integer number (1110550551).

Almost surely, 2^2221101101 is an apocalyptic number.

It is an amenable number.

2221101101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221101101 is an equidigital number, since it uses as much as digits as its factorization.

2221101101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2221101101 is about 47128.5592926412. The cubic root of 2221101101 is about 1304.7363914147.

Adding to 2221101101 its reverse (1011011222), we get a palindrome (3232112323).

The spelling of 2221101101 in words is "two billion, two hundred twenty-one million, one hundred one thousand, one hundred one".