201010111097 has 2 divisors, whose sum is σ = 201010111098. Its totient is φ = 201010111096.

The previous prime is 201010111079. The next prime is 201010111129. The reversal of 201010111097 is 790111010102.

It is a happy number.

Together with previous prime (201010111079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158057134096 + 42952977001 = 397564^2 + 207251^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010111097 - 2⁶ = 201010111033 is a prime.

It is not a weakly prime, because it can be changed into another prime (201010111007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505055548 + 100505055549.

It is an arithmetic number, because the mean of its divisors is an integer number (100505055549).

Almost surely, 2^201010111097 is an apocalyptic number.

It is an amenable number.

201010111097 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010111097 is an equidigital number, since it uses as much as digits as its factorization.

201010111097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 23.

Adding to 201010111097 its reverse (790111010102), we get a palindrome (991121121199).

The spelling of 201010111097 in words is "two hundred one billion, ten million, one hundred eleven thousand, ninety-seven".