1121330221 has 8 divisors (see below), whose sum is σ = 1251717984. Its totient is φ = 995683920.

The previous prime is 1121330213. The next prime is 1121330227. The reversal of 1121330221 is 1220331211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121330221 - 2³ = 1121330213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121330195 and 1121330204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121330227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1184866 + ... + 1185811.

It is an arithmetic number, because the mean of its divisors is an integer number (156464748).

Almost surely, 2^1121330221 is an apocalyptic number.

1121330221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121330221 is a deficient number, since it is larger than the sum of its proper divisors (130387763).

1121330221 is a wasteful number, since it uses less digits than its factorization.

1121330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370731.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1121330221 is about 33486.2691412465. The cubic root of 1121330221 is about 1038.9097984630.

Adding to 1121330221 its reverse (1220331211), we get a palindrome (2341661432).

The spelling of 1121330221 in words is "one billion, one hundred twenty-one million, three hundred thirty thousand, two hundred twenty-one".