721202101201 has 4 divisors (see below), whose sum is σ = 721796663092. Its totient is φ = 720607539312.

The previous prime is 721202101157. The next prime is 721202101211. The reversal of 721202101201 is 102101202127.

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 32634061201 + 688568040000 = 180649^2 + 829800^2 .

It is a cyclic number.

It is not a de Polignac number, because 721202101201 - 2⁷ = 721202101073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721202101211) 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, 297279126 + ... + 297281551.

It is an arithmetic number, because the mean of its divisors is an integer number (180449165773).

Almost surely, 2^721202101201 is an apocalyptic number.

It is an amenable number.

721202101201 is a deficient number, since it is larger than the sum of its proper divisors (594561891).

721202101201 is a wasteful number, since it uses less digits than its factorization.

721202101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594561890.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 721202101201 its reverse (102101202127), we get a palindrome (823303303328).

It can be divided in two parts, 721202 and 101201, that added together give a triangular number (822403 = T₁₂₈₂).

The spelling of 721202101201 in words is "seven hundred twenty-one billion, two hundred two million, one hundred one thousand, two hundred one".