210120021201109 has 8 divisors (see below), whose sum is σ = 210885802037048. Its totient is φ = 209354292342720.

The previous prime is 210120021201061. The next prime is 210120021201119. The reversal of 210120021201109 is 901102120021012.

210120021201109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1636744098609 + 208483277102500 = 1279353^2 + 14438950^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 210120021201109 - 2⁴⁷ = 69382532845781 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 210120021201109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120021201119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4885422 + ... + 21073855.

It is an arithmetic number, because the mean of its divisors is an integer number (26360725254631).

Almost surely, 2^{210120021201109} is an apocalyptic number.

It is an amenable number.

210120021201109 is a deficient number, since it is larger than the sum of its proper divisors (765780835939).

210120021201109 is a wasteful number, since it uses less digits than its factorization.

210120021201109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25988775.

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

The spelling of 210120021201109 in words is "two hundred ten trillion, one hundred twenty billion, twenty-one million, two hundred one thousand, one hundred nine".