111081097 has 2 divisors, whose sum is σ = 111081098. Its totient is φ = 111081096.

The previous prime is 111081073. The next prime is 111081101. The reversal of 111081097 is 790180111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92236816 + 18844281 = 9604^2 + 4341^2 .

It is a cyclic number.

It is not a de Polignac number, because 111081097 - 2⁷ = 111080969 is a prime.

It is a super-2 number, since 2×111081097² = 24678020221446818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111081017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55540548 + 55540549.

It is an arithmetic number, because the mean of its divisors is an integer number (55540549).

Almost surely, 2^111081097 is an apocalyptic number.

It is an amenable number.

111081097 is a deficient number, since it is larger than the sum of its proper divisors (1).

111081097 is an equidigital number, since it uses as much as digits as its factorization.

111081097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 28.

The square root of 111081097 is about 10539.5017434412. The cubic root of 111081097 is about 480.7065650320.

The spelling of 111081097 in words is "one hundred eleven million, eighty-one thousand, ninety-seven".