11112121021247 has 2 divisors, whose sum is σ = 11112121021248. Its totient is φ = 11112121021246.

The previous prime is 11112121021103. The next prime is 11112121021301. The reversal of 11112121021247 is 74212012121111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11112121021247 - 2³⁸ = 10837243114303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112121021747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556060510623 + 5556060510624.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060510624).

Almost surely, 2^{11112121021247} is an apocalyptic number.

11112121021247 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112121021247 is an equidigital number, since it uses as much as digits as its factorization.

11112121021247 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 26.

Adding to 11112121021247 its reverse (74212012121111), we get a palindrome (85324133142358).

The spelling of 11112121021247 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred forty-seven".