202120201105 has 8 divisors (see below), whose sum is σ = 242784628200. Its totient is φ = 161535902976.

The previous prime is 202120201093. The next prime is 202120201111. The reversal of 202120201105 is 501102021202.

It is a happy number.

202120201105 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 30393169 + 202089807936 = 5513^2 + 449544^2 .

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 202120201105 - 2⁷ = 202120200977 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20026690 + ... + 20036779.

It is an arithmetic number, because the mean of its divisors is an integer number (30348078525).

Almost surely, 2^202120201105 is an apocalyptic number.

It is an amenable number.

202120201105 is a deficient number, since it is larger than the sum of its proper divisors (40664427095).

202120201105 is a wasteful number, since it uses less digits than its factorization.

202120201105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40064483.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 202120201105 its reverse (501102021202), we get a palindrome (703222222307).

It can be divided in two parts, 202120 and 201105, that added together give a square (403225 = 635²).

The spelling of 202120201105 in words is "two hundred two billion, one hundred twenty million, two hundred one thousand, one hundred five".