201010101011 has 2 divisors, whose sum is σ = 201010101012. Its totient is φ = 201010101010.

The previous prime is 201010100959. The next prime is 201010101023. The reversal of 201010101011 is 110101010102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201010101011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201010101011.

It is not a weakly prime, because it can be changed into another prime (201010101041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505050505 + 100505050506.

It is an arithmetic number, because the mean of its divisors is an integer number (100505050506).

Almost surely, 2^201010101011 is an apocalyptic number.

201010101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010101011 is an equidigital number, since it uses as much as digits as its factorization.

201010101011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 201010101011 its reverse (110101010102), we get a palindrome (311111111113).

Subtracting from 201010101011 its reverse (110101010102), we obtain a palindrome (90909090909).

It can be divided in two parts, 20101010101 and 1, that added together give a palindrome (20101010102).

The spelling of 201010101011 in words is "two hundred one billion, ten million, one hundred one thousand, eleven".