2211123110220 has 144 divisors (see below), whose sum is σ = 6890179584288. Its totient is φ = 573544074240.

The previous prime is 2211123110143. The next prime is 2211123110227. The reversal of 2211123110220 is 220113211122.

2211123110220 is a `hidden beast` number, since 2 + 21 + 112 + 311 + 0 + 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 = 2211123110193 and 2211123110202.

It is not an unprimeable number, because it can be changed into a prime (2211123110227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26138232 + ... + 26222688.

Almost surely, 2^{2211123110220} is an apocalyptic number.

2211123110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211123110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3445089792144).

2211123110220 is an abundant number, since it is smaller than the sum of its proper divisors (4679056474068).

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

2211123110220 is a wasteful number, since it uses less digits than its factorization.

2211123110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88440 (or 88435 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2211123110220 its reverse (220113211122), we get a palindrome (2431236321342).

The spelling of 2211123110220 in words is "two trillion, two hundred eleven billion, one hundred twenty-three million, one hundred ten thousand, two hundred twenty".