11100001221097 has 2 divisors, whose sum is σ = 11100001221098. Its totient is φ = 11100001221096.

The previous prime is 11100001221091. The next prime is 11100001221107. The reversal of 11100001221097 is 79012210000111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9954050240016 + 1145950981081 = 3155004^2 + 1070491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11100001221097 is a prime.

It is not a weakly prime, because it can be changed into another prime (11100001221091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550000610548 + 5550000610549.

It is an arithmetic number, because the mean of its divisors is an integer number (5550000610549).

Almost surely, 2^{11100001221097} is an apocalyptic number.

It is an amenable number.

11100001221097 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100001221097 is an equidigital number, since it uses as much as digits as its factorization.

11100001221097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 11100001221097 in words is "eleven trillion, one hundred billion, one million, two hundred twenty-one thousand, ninety-seven".