11221100122201 has 4 divisors (see below), whose sum is σ = 11223254302900. Its totient is φ = 11218945941504.

The previous prime is 11221100122151. The next prime is 11221100122237. The reversal of 11221100122201 is 10222100112211.

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 7154827872201 + 4066272250000 = 2674851^2 + 2016500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221100122201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221100122261) 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, 1077082536 + ... + 1077092953.

It is an arithmetic number, because the mean of its divisors is an integer number (2805813575725).

Almost surely, 2^{11221100122201} is an apocalyptic number.

It is an amenable number.

11221100122201 is a deficient number, since it is larger than the sum of its proper divisors (2154180699).

11221100122201 is an equidigital number, since it uses as much as digits as its factorization.

11221100122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154180698.

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

Adding to 11221100122201 its reverse (10222100112211), we get a palindrome (21443200234412).

The spelling of 11221100122201 in words is "eleven trillion, two hundred twenty-one billion, one hundred million, one hundred twenty-two thousand, two hundred one".