111143221403209 has 2 divisors, whose sum is σ = 111143221403210. Its totient is φ = 111143221403208.

The previous prime is 111143221403129. The next prime is 111143221403233. The reversal of 111143221403209 is 902304122341111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67975325431225 + 43167895971984 = 8244715^2 + 6570228^2 .

It is a cyclic number.

It is not a de Polignac number, because 111143221403209 - 2²³ = 111143213014601 is a prime.

It is not a weakly prime, because it can be changed into another prime (111143221403309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55571610701604 + 55571610701605.

It is an arithmetic number, because the mean of its divisors is an integer number (55571610701605).

Almost surely, 2^{111143221403209} is an apocalyptic number.

It is an amenable number.

111143221403209 is a deficient number, since it is larger than the sum of its proper divisors (1).

111143221403209 is an equidigital number, since it uses as much as digits as its factorization.

111143221403209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 111143221403209 in words is "one hundred eleven trillion, one hundred forty-three billion, two hundred twenty-one million, four hundred three thousand, two hundred nine".