11111200020220 has 48 divisors (see below), whose sum is σ = 23357604513600. Its totient is φ = 4439894883840.

The previous prime is 11111200020209. The next prime is 11111200020223. The reversal of 11111200020220 is 2202000211111.

It is a self number, because there is not a number n which added to its sum of digits gives 11111200020220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111200020223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76176960 + ... + 76322680.

It is an arithmetic number, because the mean of its divisors is an integer number (486616760700).

Almost surely, 2^{11111200020220} is an apocalyptic number.

11111200020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111200020220 is an abundant number, since it is smaller than the sum of its proper divisors (12246404493380).

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

11111200020220 is a wasteful number, since it uses less digits than its factorization.

11111200020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149638 (or 149636 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11111200020220 its reverse (2202000211111), we get a palindrome (13313200231331).

The spelling of 11111200020220 in words is "eleven trillion, one hundred eleven billion, two hundred million, twenty thousand, two hundred twenty".