11220121201111 has 8 divisors (see below), whose sum is σ = 11229670715648. Its totient is φ = 11210572395000.

The previous prime is 11220121201099. The next prime is 11220121201153. The reversal of 11220121201111 is 11110212102211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220121201111 - 2¹³ = 11220121192919 is a prime.

It is a super-2 number, since 2×11220121201111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220121201411) 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 7 ways as a sum of consecutive naturals, for example, 34368316 + ... + 34693246.

It is an arithmetic number, because the mean of its divisors is an integer number (1403708839456).

Almost surely, 2^{11220121201111} is an apocalyptic number.

11220121201111 is a deficient number, since it is larger than the sum of its proper divisors (9549514537).

11220121201111 is a wasteful number, since it uses less digits than its factorization.

11220121201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354213.

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

Adding to 11220121201111 its reverse (11110212102211), we get a palindrome (22330333303322).

The spelling of 11220121201111 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, two hundred one thousand, one hundred eleven".