11100121220101 has 2 divisors, whose sum is σ = 11100121220102. Its totient is φ = 11100121220100.

The previous prime is 11100121220077. The next prime is 11100121220147. The reversal of 11100121220101 is 10102212100111.

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., 10956093380001 + 144027840100 = 3309999^2 + 379510^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100121220101 - 2³¹ = 11097973736453 is a prime.

It is a super-2 number, since 2×11100121220101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100121227101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550060610050 + 5550060610051.

It is an arithmetic number, because the mean of its divisors is an integer number (5550060610051).

Almost surely, 2^{11100121220101} is an apocalyptic number.

It is an amenable number.

11100121220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100121220101 is an equidigital number, since it uses as much as digits as its factorization.

11100121220101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11100121220101 its reverse (10102212100111), we get a palindrome (21202333320212).

The spelling of 11100121220101 in words is "eleven trillion, one hundred billion, one hundred twenty-one million, two hundred twenty thousand, one hundred one".