201200000101091 has 2 divisors, whose sum is σ = 201200000101092. Its totient is φ = 201200000101090.

The previous prime is 201200000101057. The next prime is 201200000101157. The reversal of 201200000101091 is 190101000002102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201200000101091 - 2⁴⁶ = 130831255923427 is a prime.

It is not a weakly prime, because it can be changed into another prime (201200000101291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600000050545 + 100600000050546.

It is an arithmetic number, because the mean of its divisors is an integer number (100600000050546).

Almost surely, 2^{201200000101091} is an apocalyptic number.

201200000101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

201200000101091 is an equidigital number, since it uses as much as digits as its factorization.

201200000101091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 201200000101091 its reverse (190101000002102), we get a palindrome (391301000103193).

The spelling of 201200000101091 in words is "two hundred one trillion, two hundred billion, one hundred one thousand, ninety-one".