201111020097 has 32 divisors (see below), whose sum is σ = 294487401600. Its totient is φ = 121316562432.

The previous prime is 201111020083. The next prime is 201111020107. The reversal of 201111020097 is 790020111102.

It is not a de Polignac number, because 201111020097 - 2¹¹ = 201111018049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201111020197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2290554 + ... + 2376732.

It is an arithmetic number, because the mean of its divisors is an integer number (9202731300).

Almost surely, 2^201111020097 is an apocalyptic number.

It is an amenable number.

201111020097 is a deficient number, since it is larger than the sum of its proper divisors (93376381503).

201111020097 is a wasteful number, since it uses less digits than its factorization.

201111020097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87377.

The product of its (nonzero) digits is 252, while the sum is 24.

Adding to 201111020097 its reverse (790020111102), we get a palindrome (991131131199).

The spelling of 201111020097 in words is "two hundred one billion, one hundred eleven million, twenty thousand, ninety-seven".