11221121220011 has 16 divisors (see below), whose sum is σ = 11836898935200. Its totient is φ = 10607871456000.

The previous prime is 11221121219879. The next prime is 11221121220103. The reversal of 11221121220011 is 11002212112211.

It is not a de Polignac number, because 11221121220011 - 2¹⁰ = 11221121218987 is a prime.

It is a super-2 number, since 2×11221121220011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221121220811) 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, 47287961 + ... + 47524661.

It is an arithmetic number, because the mean of its divisors is an integer number (739806183450).

Almost surely, 2^{11221121220011} is an apocalyptic number.

11221121220011 is a deficient number, since it is larger than the sum of its proper divisors (615777715189).

11221121220011 is a wasteful number, since it uses less digits than its factorization.

11221121220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242030.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221121220011 its reverse (11002212112211), we get a palindrome (22223333332222).

The spelling of 11221121220011 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, eleven".