1121021120 has 28 divisors (see below), whose sum is σ = 2669432304. Its totient is φ = 448408320.

The previous prime is 1121021117. The next prime is 1121021149. The reversal of 1121021120 is 211201211.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751276 + ... + 1751915.

It is an arithmetic number, because the mean of its divisors is an integer number (95336868).

Almost surely, 2^1121021120 is an apocalyptic number.

1121021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121021120 is an abundant number, since it is smaller than the sum of its proper divisors (1548411184).

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

1121021120 is an equidigital number, since it uses as much as digits as its factorization.

1121021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503208 (or 3503198 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1121021120 is about 33481.6534836618. The cubic root of 1121021120 is about 1038.8143292417.

Adding to 1121021120 its reverse (211201211), we get a palindrome (1332222331).

The spelling of 1121021120 in words is "one billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty".