11011220211020 has 24 divisors (see below), whose sum is σ = 23257224661104. Its totient is φ = 4379028614336.

The previous prime is 11011220210993. The next prime is 11011220211029. The reversal of 11011220211020 is 2011202211011.

It is a junction number, because it is equal to n+sod(n) for n = 11011220210986 and 11011220211004.

It is not an unprimeable number, because it can be changed into a prime (11011220211029) 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 7 ways as a sum of consecutive naturals, for example, 1591213334 + ... + 1591220253.

It is an arithmetic number, because the mean of its divisors is an integer number (969051027546).

Almost surely, 2^{11011220211020} is an apocalyptic number.

11011220211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011220211020 is an abundant number, since it is smaller than the sum of its proper divisors (12246004450084).

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

11011220211020 is a wasteful number, since it uses less digits than its factorization.

11011220211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182433769 (or 3182433767 counting only the distinct ones).

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

Adding to 11011220211020 its reverse (2011202211011), we get a palindrome (13022422422031).

Subtracting from 11011220211020 its reverse (2011202211011), we obtain a square (9000018000009 = 3000003²).

The spelling of 11011220211020 in words is "eleven trillion, eleven billion, two hundred twenty million, two hundred eleven thousand, twenty".