11021221100101 has 4 divisors (see below), whose sum is σ = 11028622861900. Its totient is φ = 11013819338304.

The previous prime is 11021221100081. The next prime is 11021221100137. The reversal of 11021221100101 is 10100112212011.

It is a happy number.

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 3070800616900 + 7950420483201 = 1752370^2 + 2819649^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021221100101 - 2¹¹ = 11021221098053 is a prime.

It is a super-2 number, since 2×11021221100101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021221100171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3700878666 + ... + 3700881643.

It is an arithmetic number, because the mean of its divisors is an integer number (2757155715475).

Almost surely, 2^{11021221100101} is an apocalyptic number.

It is an amenable number.

11021221100101 is a deficient number, since it is larger than the sum of its proper divisors (7401761799).

11021221100101 is an equidigital number, since it uses as much as digits as its factorization.

11021221100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7401761798.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11021221100101 its reverse (10100112212011), we get a palindrome (21121333312112).

It can be divided in two parts, 11021 and 221100101, that added together give a palindrome (221111122).

The spelling of 11021221100101 in words is "eleven trillion, twenty-one billion, two hundred twenty-one million, one hundred thousand, one hundred one".