201120001091 has 2 divisors, whose sum is σ = 201120001092. Its totient is φ = 201120001090.

The previous prime is 201120001037. The next prime is 201120001129. The reversal of 201120001091 is 190100021102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201120001091 - 2¹⁸ = 201119738947 is a prime.

It is not a weakly prime, because it can be changed into another prime (201120004091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560000545 + 100560000546.

It is an arithmetic number, because the mean of its divisors is an integer number (100560000546).

Almost surely, 2^201120001091 is an apocalyptic number.

201120001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

201120001091 is an equidigital number, since it uses as much as digits as its factorization.

201120001091 is an evil number, because the sum of its binary digits is even.

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

Adding to 201120001091 its reverse (190100021102), we get a palindrome (391220022193).

The spelling of 201120001091 in words is "two hundred one billion, one hundred twenty million, one thousand, ninety-one".