1121222201020 has 48 divisors (see below), whose sum is σ = 2393416999008. Its totient is φ = 441090351360.

The previous prime is 1121222201003. The next prime is 1121222201089. The reversal of 1121222201020 is 201022221211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1121222200985 and 1121222201003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13051447 + ... + 13137073.

It is an arithmetic number, because the mean of its divisors is an integer number (49862854146).

Almost surely, 2^{1121222201020} is an apocalyptic number.

1121222201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121222201020 is an abundant number, since it is smaller than the sum of its proper divisors (1272194797988).

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

1121222201020 is a wasteful number, since it uses less digits than its factorization.

1121222201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96430 (or 96428 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1121222201020 its reverse (201022221211), we get a palindrome (1322244422231).

The spelling of 1121222201020 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, twenty".