11121220200997 has 2 divisors, whose sum is σ = 11121220200998. Its totient is φ = 11121220200996.

The previous prime is 11121220200989. The next prime is 11121220201079. The reversal of 11121220200997 is 79900202212111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9604457999236 + 1516762201761 = 3099106^2 + 1231569^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121220200997 - 2³ = 11121220200989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121220200907) 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, 5560610100498 + 5560610100499.

It is an arithmetic number, because the mean of its divisors is an integer number (5560610100499).

Almost surely, 2^{11121220200997} is an apocalyptic number.

It is an amenable number.

11121220200997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121220200997 is an equidigital number, since it uses as much as digits as its factorization.

11121220200997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 11121220200997 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, nine hundred ninety-seven".