10021201212109 has 8 divisors (see below), whose sum is σ = 10350147340152. Its totient is φ = 9697435338240.

The previous prime is 10021201212047. The next prime is 10021201212137. The reversal of 10021201212109 is 90121210212001.

It can be written as a sum of positive squares in 4 ways, for example, as 660232627209 + 9360968584900 = 812547^2 + 3059570^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10021201212109 - 2³¹ = 10019053728461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10021201212109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021201212809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295059612 + ... + 1295067349.

It is an arithmetic number, because the mean of its divisors is an integer number (1293768417519).

Almost surely, 2^{10021201212109} is an apocalyptic number.

It is an amenable number.

10021201212109 is a deficient number, since it is larger than the sum of its proper divisors (328946128043).

10021201212109 is an equidigital number, since it uses as much as digits as its factorization.

10021201212109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590127087.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 10021201212109 in words is "ten trillion, twenty-one billion, two hundred one million, two hundred twelve thousand, one hundred nine".