1121030120 has 128 divisors (see below), whose sum is σ = 3037478400. Its totient is φ = 364041216.

The previous prime is 1121030117. The next prime is 1121030137. The reversal of 1121030120 is 210301211.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 701162 + ... + 702758.

It is an arithmetic number, because the mean of its divisors is an integer number (23730300).

Almost surely, 2^1121030120 is an apocalyptic number.

1121030120 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 1121030120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1518739200).

1121030120 is an abundant number, since it is smaller than the sum of its proper divisors (1916448280).

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

1121030120 is a wasteful number, since it uses less digits than its factorization.

1121030120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1121030120 is about 33481.7878853564. The cubic root of 1121030120 is about 1038.8171092381.

Adding to 1121030120 its reverse (210301211), we get a palindrome (1331331331).

It can be divided in two parts, 1 and 121030120, that added together give a palindrome (121030121).

The spelling of 1121030120 in words is "one billion, one hundred twenty-one million, thirty thousand, one hundred twenty".