11101222220220 has 144 divisors (see below), whose sum is σ = 36737256786048. Its totient is φ = 2691036650880.

The previous prime is 11101222220213. The next prime is 11101222220227. The reversal of 11101222220220 is 2202222210111.

It is a happy number.

11101222220220 is a `hidden beast` number, since 1 + 1 + 1 + 0 + 1 + 222 + 220 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (11101222220213) and next prime (11101222220227).

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 = 11101222220193 and 11101222220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101222220227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32991667 + ... + 33326453.

It is an arithmetic number, because the mean of its divisors is an integer number (255119838792).

Almost surely, 2^{11101222220220} is an apocalyptic number.

11101222220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101222220220 is an abundant number, since it is smaller than the sum of its proper divisors (25636034565828).

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

11101222220220 is a wasteful number, since it uses less digits than its factorization.

11101222220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351560 (or 351555 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11101222220220 its reverse (2202222210111), we get a palindrome (13303444430331).

The spelling of 11101222220220 in words is "eleven trillion, one hundred one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty".