6721200520701 has 4 divisors (see below), whose sum is σ = 8961600694272. Its totient is φ = 4480800347132.

The previous prime is 6721200520691. The next prime is 6721200520711. The reversal of 6721200520701 is 1070250021276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6721200520691) and next prime (6721200520711).

It is a cyclic number.

It is not a de Polignac number, because 6721200520701 - 2¹⁸ = 6721200258557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721200520711) 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, 1120200086781 + ... + 1120200086786.

It is an arithmetic number, because the mean of its divisors is an integer number (2240400173568).

Almost surely, 2^{6721200520701} is an apocalyptic number.

It is an amenable number.

6721200520701 is a deficient number, since it is larger than the sum of its proper divisors (2240400173571).

6721200520701 is a wasteful number, since it uses less digits than its factorization.

6721200520701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240400173570.

The product of its (nonzero) digits is 11760, while the sum is 33.

Adding to 6721200520701 its reverse (1070250021276), we get a palindrome (7791450541977).

The spelling of 6721200520701 in words is "six trillion, seven hundred twenty-one billion, two hundred million, five hundred twenty thousand, seven hundred one".