11220121200121 has 16 divisors (see below), whose sum is σ = 11738017526400. Its totient is φ = 10704736741248.

The previous prime is 11220121200109. The next prime is 11220121200139. The reversal of 11220121200121 is 12100212102211.

It is not a de Polignac number, because 11220121200121 - 2²³ = 11220112811513 is a prime.

It is a super-2 number, since 2×11220121200121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220121200095 and 11220121200104.

It is not an unprimeable number, because it can be changed into a prime (11220121200221) 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 15 ways as a sum of consecutive naturals, for example, 81480490 + ... + 81618076.

It is an arithmetic number, because the mean of its divisors is an integer number (733626095400).

Almost surely, 2^{11220121200121} is an apocalyptic number.

It is an amenable number.

11220121200121 is a deficient number, since it is larger than the sum of its proper divisors (517896326279).

11220121200121 is a wasteful number, since it uses less digits than its factorization.

11220121200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146688.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11220121200121 its reverse (12100212102211), we get a palindrome (23320333302332).

The spelling of 11220121200121 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-one".