111020200097 has 4 divisors (see below), whose sum is σ = 111075244356. Its totient is φ = 110965155840.

The previous prime is 111020200073. The next prime is 111020200133. The reversal of 111020200097 is 790002020111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790002020111 = 137 ⋅5766438103.

It can be written as a sum of positive squares in 2 ways, for example, as 93711903376 + 17308296721 = 306124^2 + 131561^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020200097 - 2²⁶ = 110953091233 is a prime.

It is a super-3 number, since 3×111020200097³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111020200597) 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 3 ways as a sum of consecutive naturals, for example, 27519104 + ... + 27523137.

It is an arithmetic number, because the mean of its divisors is an integer number (27768811089).

Almost surely, 2^111020200097 is an apocalyptic number.

It is an amenable number.

111020200097 is a deficient number, since it is larger than the sum of its proper divisors (55044259).

111020200097 is an equidigital number, since it uses as much as digits as its factorization.

111020200097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55044258.

The product of its (nonzero) digits is 252, while the sum is 23.

The spelling of 111020200097 in words is "one hundred eleven billion, twenty million, two hundred thousand, ninety-seven".