111001219997 has 2 divisors, whose sum is σ = 111001219998. Its totient is φ = 111001219996.

The previous prime is 111001219981. The next prime is 111001220021. The reversal of 111001219997 is 799912100111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62293171396 + 48708048601 = 249586^2 + 220699^2 .

It is a cyclic number.

It is not a de Polignac number, because 111001219997 - 2⁴ = 111001219981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111001212997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500609998 + 55500609999.

It is an arithmetic number, because the mean of its divisors is an integer number (55500609999).

Almost surely, 2^111001219997 is an apocalyptic number.

It is an amenable number.

111001219997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001219997 is an equidigital number, since it uses as much as digits as its factorization.

111001219997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 41.

The spelling of 111001219997 in words is "one hundred eleven billion, one million, two hundred nineteen thousand, nine hundred ninety-seven".