11101322221221 has 16 divisors (see below), whose sum is σ = 14810336985600. Its totient is φ = 7396594982400.

The previous prime is 11101322221219. The next prime is 11101322221243. The reversal of 11101322221221 is 12212222310111.

It is not a de Polignac number, because 11101322221221 - 2¹ = 11101322221219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101322221291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101746705 + ... + 101855753.

It is an arithmetic number, because the mean of its divisors is an integer number (925646061600).

Almost surely, 2^{11101322221221} is an apocalyptic number.

It is an amenable number.

11101322221221 is a deficient number, since it is larger than the sum of its proper divisors (3709014764379).

11101322221221 is a wasteful number, since it uses less digits than its factorization.

11101322221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128396.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 11101322221221 its reverse (12212222310111), we get a palindrome (23313544531332).

The spelling of 11101322221221 in words is "eleven trillion, one hundred one billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".