101116321 has 4 divisors (see below), whose sum is σ = 101760532. Its totient is φ = 100472112.

The previous prime is 101116319. The next prime is 101116331. The reversal of 101116321 is 123611101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24641296 + 76475025 = 4964^2 + 8745^2 .

It is a cyclic number.

It is not a de Polignac number, because 101116321 - 2¹ = 101116319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101116295 and 101116304.

It is not an unprimeable number, because it can be changed into a prime (101116331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321870 + ... + 322183.

It is an arithmetic number, because the mean of its divisors is an integer number (25440133).

Almost surely, 2^101116321 is an apocalyptic number.

It is an amenable number.

101116321 is a deficient number, since it is larger than the sum of its proper divisors (644211).

101116321 is an equidigital number, since it uses as much as digits as its factorization.

101116321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644210.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 101116321 is about 10055.6611418643. The cubic root of 101116321 is about 465.8796637096.

Adding to 101116321 its reverse (123611101), we get a palindrome (224727422).

The spelling of 101116321 in words is "one hundred one million, one hundred sixteen thousand, three hundred twenty-one".