201011121611 has 2 divisors, whose sum is σ = 201011121612. Its totient is φ = 201011121610.

The previous prime is 201011121589. The next prime is 201011121643. The reversal of 201011121611 is 116121110102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201011121611 - 2¹⁰ = 201011120587 is a prime.

It is a super-2 number, since 2×201011121611² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201011121611.

It is not a weakly prime, because it can be changed into another prime (201011121811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505560805 + 100505560806.

It is an arithmetic number, because the mean of its divisors is an integer number (100505560806).

Almost surely, 2^201011121611 is an apocalyptic number.

201011121611 is a deficient number, since it is larger than the sum of its proper divisors (1).

201011121611 is an equidigital number, since it uses as much as digits as its factorization.

201011121611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 201011121611 its reverse (116121110102), we get a palindrome (317132231713).

The spelling of 201011121611 in words is "two hundred one billion, eleven million, one hundred twenty-one thousand, six hundred eleven".