1101997321 has 8 divisors (see below), whose sum is σ = 1210432320. Its totient is φ = 998605872.

The previous prime is 1101997291. The next prime is 1101997333. The reversal of 1101997321 is 1237991011.

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 1101997321 - 2²³ = 1093608713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101994321) 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, 1260430 + ... + 1261303.

It is an arithmetic number, because the mean of its divisors is an integer number (151304040).

Almost surely, 2^1101997321 is an apocalyptic number.

It is an amenable number.

1101997321 is a deficient number, since it is larger than the sum of its proper divisors (108434999).

1101997321 is a wasteful number, since it uses less digits than its factorization.

1101997321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521775.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 1101997321 is about 33196.3449945924. The cubic root of 1101997321 is about 1032.9045239749.

The spelling of 1101997321 in words is "one billion, one hundred one million, nine hundred ninety-seven thousand, three hundred twenty-one".