201011121201091 has 2 divisors, whose sum is σ = 201011121201092. Its totient is φ = 201011121201090.

The previous prime is 201011121201043. The next prime is 201011121201119. The reversal of 201011121201091 is 190102121110102.

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-201011121201091 is a prime.

It is not a weakly prime, because it can be changed into another prime (201011121201041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505560600545 + 100505560600546.

It is an arithmetic number, because the mean of its divisors is an integer number (100505560600546).

Almost surely, 2^{201011121201091} is an apocalyptic number.

201011121201091 is a deficient number, since it is larger than the sum of its proper divisors (1).

201011121201091 is an equidigital number, since it uses as much as digits as its factorization.

201011121201091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

Adding to 201011121201091 its reverse (190102121110102), we get a palindrome (391113242311193).

The spelling of 201011121201091 in words is "two hundred one trillion, eleven billion, one hundred twenty-one million, two hundred one thousand, ninety-one".