721113210001 has 16 divisors (see below), whose sum is σ = 732180263040. Its totient is φ = 710149426560.

The previous prime is 721113209983. The next prime is 721113210031. The reversal of 721113210001 is 100012311127.

It is a cyclic number.

It is not a de Polignac number, because 721113210001 - 2¹¹ = 721113207953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721113210031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10289260 + ... + 10359106.

It is an arithmetic number, because the mean of its divisors is an integer number (45761266440).

Almost surely, 2^721113210001 is an apocalyptic number.

It is an amenable number.

721113210001 is a deficient number, since it is larger than the sum of its proper divisors (11067053039).

721113210001 is a wasteful number, since it uses less digits than its factorization.

721113210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70584.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 721113210001 its reverse (100012311127), we get a palindrome (821125521128).

The spelling of 721113210001 in words is "seven hundred twenty-one billion, one hundred thirteen million, two hundred ten thousand, one".