111021642097 has 2 divisors, whose sum is σ = 111021642098. Its totient is φ = 111021642096.

The previous prime is 111021642019. The next prime is 111021642157. The reversal of 111021642097 is 790246120111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79428712561 + 31592929536 = 281831^2 + 177744^2 .

It is a cyclic number.

It is not a de Polignac number, because 111021642097 - 2¹¹ = 111021640049 is a prime.

It is a super-3 number, since 3×111021642097³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (111021642397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510821048 + 55510821049.

It is an arithmetic number, because the mean of its divisors is an integer number (55510821049).

Almost surely, 2^111021642097 is an apocalyptic number.

It is an amenable number.

111021642097 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021642097 is an equidigital number, since it uses as much as digits as its factorization.

111021642097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The spelling of 111021642097 in words is "one hundred eleven billion, twenty-one million, six hundred forty-two thousand, ninety-seven".