1121002020208 has 160 divisors (see below), whose sum is σ = 2583134668800. Its totient is φ = 461293056000.

The previous prime is 1121002020197. The next prime is 1121002020223. The reversal of 1121002020208 is 8020202001211.

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 31 ways as a sum of consecutive naturals, for example, 205723468 + ... + 205728916.

It is an arithmetic number, because the mean of its divisors is an integer number (16144591680).

Almost surely, 2^{1121002020208} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121002020208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291567334400).

1121002020208 is an abundant number, since it is smaller than the sum of its proper divisors (1462132648592).

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

1121002020208 is a wasteful number, since it uses less digits than its factorization.

1121002020208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6207 (or 6201 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1121002020208 its reverse (8020202001211), we get a palindrome (9141204021419).

The spelling of 1121002020208 in words is "one trillion, one hundred twenty-one billion, two million, twenty thousand, two hundred eight".