11220121101220 has 24 divisors (see below), whose sum is σ = 23562620855424. Its totient is φ = 4487978622816.

The previous prime is 11220121101187. The next prime is 11220121101229. The reversal of 11220121101220 is 2210112102211.

It is a super-2 number, since 2×11220121101220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11220121101194 and 11220121101203.

It is not an unprimeable number, because it can be changed into a prime (11220121101229) 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, 3035964 + ... + 5626483.

It is an arithmetic number, because the mean of its divisors is an integer number (981775868976).

Almost surely, 2^{11220121101220} is an apocalyptic number.

11220121101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220121101220 is an abundant number, since it is smaller than the sum of its proper divisors (12342499754204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11220121101220 is a wasteful number, since it uses less digits than its factorization.

11220121101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8727219 (or 8727217 counting only the distinct ones).

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

Adding to 11220121101220 its reverse (2210112102211), we get a palindrome (13430233203431).

The spelling of 11220121101220 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, one hundred one thousand, two hundred twenty".