2221221011101 has 4 divisors (see below), whose sum is σ = 2297814839100. Its totient is φ = 2144627183104.

The previous prime is 2221221011081. The next prime is 2221221011117. The reversal of 2221221011101 is 1011101221222.

2221221011101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1323983916025 + 897237095076 = 1150645^2 + 947226^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221221011101 - 2¹¹ = 2221221009053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221221011161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38296913956 + ... + 38296914013.

It is an arithmetic number, because the mean of its divisors is an integer number (574453709775).

Almost surely, 2^{2221221011101} is an apocalyptic number.

It is an amenable number.

2221221011101 is a deficient number, since it is larger than the sum of its proper divisors (76593827999).

2221221011101 is an equidigital number, since it uses as much as digits as its factorization.

2221221011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76593827998.

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

Adding to 2221221011101 its reverse (1011101221222), we get a palindrome (3232322232323).

The spelling of 2221221011101 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-one million, eleven thousand, one hundred one".