6631020101 has 4 divisors (see below), whose sum is σ = 6631375392. Its totient is φ = 6630664812.

The previous prime is 6631020073. The next prime is 6631020103. The reversal of 6631020101 is 1010201366.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1010201366 = 2 ⋅505100683.

It is a cyclic number.

It is not a de Polignac number, because 6631020101 - 2¹⁰ = 6631019077 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 (6631020103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148001 + ... + 187526.

It is an arithmetic number, because the mean of its divisors is an integer number (1657843848).

Almost surely, 2^6631020101 is an apocalyptic number.

It is an amenable number.

6631020101 is a deficient number, since it is larger than the sum of its proper divisors (355291).

6631020101 is a wasteful number, since it uses less digits than its factorization.

6631020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355290.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 6631020101 is about 81431.0757696348. The cubic root of 6631020101 is about 1878.7115909112.

Adding to 6631020101 its reverse (1010201366), we get a palindrome (7641221467).

The spelling of 6631020101 in words is "six billion, six hundred thirty-one million, twenty thousand, one hundred one".