11220121222211 has 8 divisors (see below), whose sum is σ = 12240786355200. Its totient is φ = 10199565108040.

The previous prime is 11220121222181. The next prime is 11220121222213. The reversal of 11220121222211 is 11222212102211.

11220121222211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11220121222211 - 2¹⁰ = 11220121221187 is a prime.

It is a super-2 number, since 2×11220121222211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220121222213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27039431 + ... + 27451248.

It is an arithmetic number, because the mean of its divisors is an integer number (1530098294400).

Almost surely, 2^{11220121222211} is an apocalyptic number.

11220121222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11220121222211 is a deficient number, since it is larger than the sum of its proper divisors (1020665132989).

11220121222211 is a wasteful number, since it uses less digits than its factorization.

11220121222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54509409.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11220121222211 its reverse (11222212102211), we get a palindrome (22442333324422).

The spelling of 11220121222211 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred eleven".