201011011 has 4 divisors (see below), whose sum is σ = 203842224. Its totient is φ = 198179800.

The previous prime is 201011003. The next prime is 201011023. The reversal of 201011011 is 110110102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110110102 = 2 ⋅55055051.

It is a cyclic number.

It is not a de Polignac number, because 201011011 - 2³ = 201011003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201010985 and 201011003.

It is not an unprimeable number, because it can be changed into a prime (201011711) 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, 1415500 + ... + 1415641.

It is an arithmetic number, because the mean of its divisors is an integer number (50960556).

Almost surely, 2^201011011 is an apocalyptic number.

201011011 is a deficient number, since it is larger than the sum of its proper divisors (2831213).

201011011 is an equidigital number, since it uses as much as digits as its factorization.

201011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831212.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 201011011 is about 14177.8352014685. The cubic root of 201011011 is about 585.7872965642.

Adding to 201011011 its reverse (110110102), we get a palindrome (311121113).

Subtracting from 201011011 its reverse (110110102), we obtain a palindrome (90900909).

It can be divided in two parts, 20101 and 1011, that added together give a palindrome (21112).

The spelling of 201011011 in words is "two hundred one million, eleven thousand, eleven".