202011110001 has 20 divisors (see below), whose sum is σ = 306716734324. Its totient is φ = 132466298400.

The previous prime is 202011109999. The next prime is 202011110003. The reversal of 202011110001 is 100011110202.

It is a happy number.

202011110001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (202011109999) and next prime (202011110003).

It can be written as a sum of positive squares in 2 ways, for example, as 103696880400 + 98314229601 = 322020^2 + 313551^2 .

It is not a de Polignac number, because 202011110001 - 2¹ = 202011109999 is a prime.

It is a super-2 number, since 2×202011110001² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202011110003) 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 19 ways as a sum of consecutive naturals, for example, 20437390 + ... + 20447271.

Almost surely, 2^202011110001 is an apocalyptic number.

It is an amenable number.

202011110001 is a deficient number, since it is larger than the sum of its proper divisors (104705624323).

202011110001 is an equidigital number, since it uses as much as digits as its factorization.

202011110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40884734 (or 40884725 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 202011110001 its reverse (100011110202), we get a palindrome (302022220203).

The spelling of 202011110001 in words is "two hundred two billion, eleven million, one hundred ten thousand, one".