111221200247 has 2 divisors, whose sum is σ = 111221200248. Its totient is φ = 111221200246.

The previous prime is 111221200199. The next prime is 111221200267. The reversal of 111221200247 is 742002122111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111221200247 - 2¹⁰ = 111221199223 is a prime.

It is a super-2 number, since 2×111221200247² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111221200267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610600123 + 55610600124.

It is an arithmetic number, because the mean of its divisors is an integer number (55610600124).

Almost surely, 2^111221200247 is an apocalyptic number.

111221200247 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221200247 is an equidigital number, since it uses as much as digits as its factorization.

111221200247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 111221200247 its reverse (742002122111), we get a palindrome (853223322358).

The spelling of 111221200247 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred thousand, two hundred forty-seven".