11220121011 has 8 divisors (see below), whose sum is σ = 16320176064. Its totient is φ = 6800073320.

The previous prime is 11220121001. The next prime is 11220121051. The reversal of 11220121011 is 11012102211.

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 11220121011 - 2¹⁰ = 11220119987 is a prime.

It is a super-2 number, since 2×11220121011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11220121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170001801 + ... + 170001866.

It is an arithmetic number, because the mean of its divisors is an integer number (2040022008).

Almost surely, 2^11220121011 is an apocalyptic number.

11220121011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11220121011 is a deficient number, since it is larger than the sum of its proper divisors (5100055053).

11220121011 is a wasteful number, since it uses less digits than its factorization.

11220121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340003681.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11220121011 its reverse (11012102211), we get a palindrome (22232223222).

It can be divided in two parts, 11220 and 121011, that added together give a palindrome (132231).

The spelling of 11220121011 in words is "eleven billion, two hundred twenty million, one hundred twenty-one thousand, eleven".