10020101985 has 24 divisors (see below), whose sum is σ = 17450506944. Its totient is φ = 5318722080.

The previous prime is 10020101981. The next prime is 10020101989. The reversal of 10020101985 is 58910102001.

It is an interprime number because it is at equal distance from previous prime (10020101981) and next prime (10020101989).

It is not a de Polignac number, because 10020101985 - 2² = 10020101981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10020101981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 518157 + ... + 537146.

It is an arithmetic number, because the mean of its divisors is an integer number (727104456).

Almost surely, 2^10020101985 is an apocalyptic number.

10020101985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10020101985 is a deficient number, since it is larger than the sum of its proper divisors (7430404959).

10020101985 is a wasteful number, since it uses less digits than its factorization.

10020101985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055525 (or 1055522 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

Adding to 10020101985 its reverse (58910102001), we get a palindrome (68930203986).

The spelling of 10020101985 in words is "ten billion, twenty million, one hundred one thousand, nine hundred eighty-five".