1101020321 has 8 divisors (see below), whose sum is σ = 1107113280. Its totient is φ = 1094938992.

The previous prime is 1101020311. The next prime is 1101020339. The reversal of 1101020321 is 1230201011.

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 1101020321 - 2⁶ = 1101020257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101020311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241166 + ... + 245688.

It is an arithmetic number, because the mean of its divisors is an integer number (138389160).

Almost surely, 2^1101020321 is an apocalyptic number.

It is an amenable number.

1101020321 is a deficient number, since it is larger than the sum of its proper divisors (6092959).

1101020321 is a wasteful number, since it uses less digits than its factorization.

1101020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1101020321 is about 33181.6262561075. The cubic root of 1101020321 is about 1032.5991856360.

Adding to 1101020321 its reverse (1230201011), we get a palindrome (2331221332).

The spelling of 1101020321 in words is "one billion, one hundred one million, twenty thousand, three hundred twenty-one".