1021121120 has 24 divisors (see below), whose sum is σ = 2412399024. Its totient is φ = 408448384.

The previous prime is 1021121063. The next prime is 1021121147. The reversal of 1021121120 is 211211201.

1021121120 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 3190844 + ... + 3191163.

It is an arithmetic number, because the mean of its divisors is an integer number (100516626).

Almost surely, 2^1021121120 is an apocalyptic number.

1021121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021121120 is an abundant number, since it is smaller than the sum of its proper divisors (1391277904).

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

1021121120 is an equidigital number, since it uses as much as digits as its factorization.

1021121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382022 (or 6382014 counting only the distinct ones).

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

The square root of 1021121120 is about 31954.9858394586. The cubic root of 1021121120 is about 1006.9913800272.

Adding to 1021121120 its reverse (211211201), we get a palindrome (1232332321).

The spelling of 1021121120 in words is "one billion, twenty-one million, one hundred twenty-one thousand, one hundred twenty".