1111101220220 has 24 divisors (see below), whose sum is σ = 2413771617600. Its totient is φ = 429114953792.

The previous prime is 1111101220217. The next prime is 1111101220237. The reversal of 1111101220220 is 220221011111.

It is a junction number, because it is equal to n+sod(n) for n = 1111101220195 and 1111101220204.

It is a congruent number.

It is an unprimeable number.

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, 957845300 + ... + 957846459.

It is an arithmetic number, because the mean of its divisors is an integer number (100573817400).

Almost surely, 2^{1111101220220} is an apocalyptic number.

1111101220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111101220220 is an abundant number, since it is smaller than the sum of its proper divisors (1302670397380).

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

1111101220220 is a wasteful number, since it uses less digits than its factorization.

1111101220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915691797 (or 1915691795 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1111101220220 its reverse (220221011111), we get a palindrome (1331322231331).

The spelling of 1111101220220 in words is "one trillion, one hundred eleven billion, one hundred one million, two hundred twenty thousand, two hundred twenty".