11221221222101 has 16 divisors (see below), whose sum is σ = 12353950752000. Its totient is φ = 10107266184000.

The previous prime is 11221221222097. The next prime is 11221221222173. The reversal of 11221221222101 is 10122212212211.

It is a cyclic number.

It is not a de Polignac number, because 11221221222101 - 2² = 11221221222097 is a prime.

It is a super-3 number, since 3×11221221222101³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221221222191) 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 15 ways as a sum of consecutive naturals, for example, 59977700 + ... + 60164498.

It is an arithmetic number, because the mean of its divisors is an integer number (772121922000).

Almost surely, 2^{11221221222101} is an apocalyptic number.

11221221222101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11221221222101 is a deficient number, since it is larger than the sum of its proper divisors (1132729529899).

11221221222101 is a wasteful number, since it uses less digits than its factorization.

11221221222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237020.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11221221222101 its reverse (10122212212211), we get a palindrome (21343433434312).

The spelling of 11221221222101 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred one".