11220620220 has 72 divisors (see below), whose sum is σ = 34077489264. Its totient is φ = 2988507648.

The previous prime is 11220620189. The next prime is 11220620249. The reversal of 11220620220 is 2202602211.

11220620220 is a `hidden beast` number, since 1 + 1 + 2 + 20 + 620 + 2 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11220620193 and 11220620202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111172 + ... + 186548.

It is an arithmetic number, because the mean of its divisors is an integer number (473298462).

Almost surely, 2^11220620220 is an apocalyptic number.

11220620220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220620220 is an abundant number, since it is smaller than the sum of its proper divisors (22856869044).

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

11220620220 is a wasteful number, since it uses less digits than its factorization.

11220620220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76219 (or 76214 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The spelling of 11220620220 in words is "eleven billion, two hundred twenty million, six hundred twenty thousand, two hundred twenty".