201121221210011 has 2 divisors, whose sum is σ = 201121221210012. Its totient is φ = 201121221210010.

The previous prime is 201121221209983. The next prime is 201121221210031. The reversal of 201121221210011 is 110012122121102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201121221210011 is a prime.

It is not a weakly prime, because it can be changed into another prime (201121221210031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560610605005 + 100560610605006.

It is an arithmetic number, because the mean of its divisors is an integer number (100560610605006).

Almost surely, 2^{201121221210011} is an apocalyptic number.

201121221210011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121221210011 is an equidigital number, since it uses as much as digits as its factorization.

201121221210011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201121221210011 its reverse (110012122121102), we get a palindrome (311133343331113).

It can be divided in two parts, 20112122 and 1210011, that multiplied together give a palindrome (24335888853342).

The spelling of 201121221210011 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred ten thousand, eleven".