1121320090 has 64 divisors (see below), whose sum is σ = 2286610560. Its totient is φ = 392170240.

The previous prime is 1121320063. The next prime is 1121320091. The reversal of 1121320090 is 900231211.

It is not an unprimeable number, because it can be changed into a prime (1121320091) by changing a digit.

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, 1106424 + ... + 1107436.

It is an arithmetic number, because the mean of its divisors is an integer number (35728290).

Almost surely, 2^1121320090 is an apocalyptic number.

1121320090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121320090 is an abundant number, since it is smaller than the sum of its proper divisors (1165290470).

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

1121320090 is a wasteful number, since it uses less digits than its factorization.

1121320090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1121320090 is about 33486.1178699472. The cubic root of 1121320090 is about 1038.9066696711.

The spelling of 1121320090 in words is "one billion, one hundred twenty-one million, three hundred twenty thousand, ninety".