111202201997 has 2 divisors, whose sum is σ = 111202201998. Its totient is φ = 111202201996.

The previous prime is 111202201993. The next prime is 111202202029. The reversal of 111202201997 is 799102202111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111119555716 + 82646281 = 333346^2 + 9091^2 .

It is a cyclic number.

It is not a de Polignac number, because 111202201997 - 2² = 111202201993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111202201991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601100998 + 55601100999.

It is an arithmetic number, because the mean of its divisors is an integer number (55601100999).

Almost surely, 2^111202201997 is an apocalyptic number.

It is an amenable number.

111202201997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202201997 is an equidigital number, since it uses as much as digits as its factorization.

111202201997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 111202201997 in words is "one hundred eleven billion, two hundred two million, two hundred one thousand, nine hundred ninety-seven".