1121001022120 has 192 divisors, whose sum is σ = 2947271184000. Its totient is φ = 382615607808.

The previous prime is 1121001022103. The next prime is 1121001022133. The reversal of 1121001022120 is 212201001211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121001022120.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 479263911 + ... + 479266249.

It is an arithmetic number, because the mean of its divisors is an integer number (15350370750).

Almost surely, 2^{1121001022120} is an apocalyptic number.

1121001022120 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 1121001022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473635592000).

1121001022120 is an abundant number, since it is smaller than the sum of its proper divisors (1826270161880).

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

1121001022120 is a wasteful number, since it uses less digits than its factorization.

1121001022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360 (or 3349 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121001022120 its reverse (212201001211), we get a palindrome (1333202023331).

The spelling of 1121001022120 in words is "one trillion, one hundred twenty-one billion, one million, twenty-two thousand, one hundred twenty".