11221001021111 has 48 divisors (see below), whose sum is σ = 13407502608000. Its totient is φ = 9361099238400.

The previous prime is 11221001021107. The next prime is 11221001021129. The reversal of 11221001021111 is 11112010012211.

It is not a de Polignac number, because 11221001021111 - 2² = 11221001021107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221001021141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89469695 + ... + 89595023.

It is an arithmetic number, because the mean of its divisors is an integer number (279322971000).

Almost surely, 2^{11221001021111} is an apocalyptic number.

11221001021111 is a deficient number, since it is larger than the sum of its proper divisors (2186501586889).

11221001021111 is a wasteful number, since it uses less digits than its factorization.

11221001021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125752 (or 125745 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11221001021111 its reverse (11112010012211), we get a palindrome (22333011033322).

The spelling of 11221001021111 in words is "eleven trillion, two hundred twenty-one billion, one million, twenty-one thousand, one hundred eleven".