1011132320220 has 144 divisors (see below), whose sum is σ = 3453862164480. Its totient is φ = 237215779200.

The previous prime is 1011132320207. The next prime is 1011132320249. The reversal of 1011132320220 is 220232311101.

1011132320220 is a `hidden beast` number, since 10 + 1 + 113 + 2 + 320 + 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 = 1011132320193 and 1011132320202.

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 47 ways as a sum of consecutive naturals, for example, 8175280 + ... + 8298039.

It is an arithmetic number, because the mean of its divisors is an integer number (23985153920).

Almost surely, 2^{1011132320220} is an apocalyptic number.

1011132320220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011132320220 is an abundant number, since it is smaller than the sum of its proper divisors (2442729844260).

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

1011132320220 is a wasteful number, since it uses less digits than its factorization.

1011132320220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16473376 (or 16473371 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1011132320220 its reverse (220232311101), we get a palindrome (1231364631321).

The spelling of 1011132320220 in words is "one trillion, eleven billion, one hundred thirty-two million, three hundred twenty thousand, two hundred twenty".