721010011 has 8 divisors (see below), whose sum is σ = 730745280. Its totient is φ = 711290112.

The previous prime is 721009973. The next prime is 721010047. The reversal of 721010011 is 110010127.

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 721010011 - 2¹⁹ = 720485723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 721009973 and 721010000.

It is not an unprimeable number, because it can be changed into a prime (721010071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114891 + ... + 121003.

It is an arithmetic number, because the mean of its divisors is an integer number (91343160).

Almost surely, 2^721010011 is an apocalyptic number.

721010011 is a deficient number, since it is larger than the sum of its proper divisors (9735269).

721010011 is a wasteful number, since it uses less digits than its factorization.

721010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7685.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 721010011 is about 26851.6295781094. The cubic root of 721010011 is about 896.6998523915.

Adding to 721010011 its reverse (110010127), we get a palindrome (831020138).

The spelling of 721010011 in words is "seven hundred twenty-one million, ten thousand, eleven".