7021005521701 has 4 divisors (see below), whose sum is σ = 7065725302252. Its totient is φ = 6976285741152.

The previous prime is 7021005521693. The next prime is 7021005521723. The reversal of 7021005521701 is 1071255001207.

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 718264725025 + 6302740796676 = 847505^2 + 2510526^2 .

It is a cyclic number.

It is not a de Polignac number, because 7021005521701 - 2³ = 7021005521693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7021005521731) 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, 22359890040 + ... + 22359890353.

It is an arithmetic number, because the mean of its divisors is an integer number (1766431325563).

Almost surely, 2^{7021005521701} is an apocalyptic number.

It is an amenable number.

7021005521701 is a deficient number, since it is larger than the sum of its proper divisors (44719780551).

7021005521701 is a wasteful number, since it uses less digits than its factorization.

7021005521701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44719780550.

The product of its (nonzero) digits is 4900, while the sum is 31.

The spelling of 7021005521701 in words is "seven trillion, twenty-one billion, five million, five hundred twenty-one thousand, seven hundred one".