11111000212097 has 2 divisors, whose sum is σ = 11111000212098. Its totient is φ = 11111000212096.

The previous prime is 11111000212021. The next prime is 11111000212159. The reversal of 11111000212097 is 79021200011111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11099585212816 + 11414999281 = 3331604^2 + 106841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111000212097 is a prime.

It is a super-4 number, since 4×11111000212097⁴ (a number of 53 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (11111000211097) 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, 5555500106048 + 5555500106049.

It is an arithmetic number, because the mean of its divisors is an integer number (5555500106049).

Almost surely, 2^{11111000212097} is an apocalyptic number.

It is an amenable number.

11111000212097 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111000212097 is an equidigital number, since it uses as much as digits as its factorization.

11111000212097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 26.

The spelling of 11111000212097 in words is "eleven trillion, one hundred eleven billion, two hundred twelve thousand, ninety-seven".