2011009201 has 4 divisors (see below), whose sum is σ = 2033604900. Its totient is φ = 1988413504.

The previous prime is 2011009199. The next prime is 2011009211. The reversal of 2011009201 is 1029001102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1029001102 = 2 ⋅514500551.

It can be written as a sum of positive squares in 2 ways, for example, as 998496801 + 1012512400 = 31599^2 + 31820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011009201 - 2¹ = 2011009199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011009211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11297716 + ... + 11297893.

It is an arithmetic number, because the mean of its divisors is an integer number (508401225).

Almost surely, 2^2011009201 is an apocalyptic number.

It is an amenable number.

2011009201 is a deficient number, since it is larger than the sum of its proper divisors (22595699).

2011009201 is an equidigital number, since it uses as much as digits as its factorization.

2011009201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22595698.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 2011009201 is about 44844.2772380156. The cubic root of 2011009201 is about 1262.2286083446.

The spelling of 2011009201 in words is "two billion, eleven million, nine thousand, two hundred one".