2011222220220 has 48 divisors (see below), whose sum is σ = 6257135797920. Its totient is φ = 536325925248.

The previous prime is 2011222220219. The next prime is 2011222220263. The reversal of 2011222220220 is 220222221102.

2011222220220 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 222 + 220 + 220 = 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 = 2011222220193 and 2011222220202.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1862242257 + ... + 1862243336.

It is an arithmetic number, because the mean of its divisors is an integer number (130356995790).

Almost surely, 2^{2011222220220} is an apocalyptic number.

2011222220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011222220220 is an abundant number, since it is smaller than the sum of its proper divisors (4245913577700).

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

2011222220220 is a wasteful number, since it uses less digits than its factorization.

2011222220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724485611 (or 3724485603 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2011222220220 its reverse (220222221102), we get a palindrome (2231444441322).

The spelling of 2011222220220 in words is "two trillion, eleven billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty".