1121000000221 has 8 divisors (see below), whose sum is σ = 1147110570144. Its totient is φ = 1094891285040.

The previous prime is 1121000000213. The next prime is 1121000000231. The reversal of 1121000000221 is 1220000001211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121000000221 - 2³ = 1121000000213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121000000198 and 1121000000207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121000000231) 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 7 ways as a sum of consecutive naturals, for example, 798750 + ... + 1697056.

It is an arithmetic number, because the mean of its divisors is an integer number (143388821268).

Almost surely, 2^{1121000000221} is an apocalyptic number.

It is an amenable number.

1121000000221 is a deficient number, since it is larger than the sum of its proper divisors (26110569923).

1121000000221 is an equidigital number, since it uses as much as digits as its factorization.

1121000000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927371.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1121000000221 its reverse (1220000001211), we get a palindrome (2341000001432).

The spelling of 1121000000221 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one", and thus it is an aban number.