1121001223320 has 576 divisors, whose sum is σ = 4122669096000. Its totient is φ = 263779338240.

The previous prime is 1121001223319. The next prime is 1121001223403. The reversal of 1121001223320 is 233221001211.

1121001223320 is a `hidden beast` number, since 1 + 1 + 210 + 0 + 122 + 332 + 0 = 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 = 1121001223293 and 1121001223302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1336115461 + ... + 1336116299.

It is an arithmetic number, because the mean of its divisors is an integer number (7157411625).

Almost surely, 2^{1121001223320} is an apocalyptic number.

1121001223320 is a gapful number since it is divisible by the number (10) 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 1121001223320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2061334548000).

1121001223320 is an abundant number, since it is smaller than the sum of its proper divisors (3001667872680).

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

1121001223320 is a wasteful number, since it uses less digits than its factorization.

1121001223320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744 (or 1726 counting only the distinct ones).

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

Adding to 1121001223320 its reverse (233221001211), we get a palindrome (1354222224531).

The spelling of 1121001223320 in words is "one trillion, one hundred twenty-one billion, one million, two hundred twenty-three thousand, three hundred twenty".