121133121247 has 2 divisors, whose sum is σ = 121133121248. Its totient is φ = 121133121246.

The previous prime is 121133121181. The next prime is 121133121259. The reversal of 121133121247 is 742121331121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121133121247 - 2²³ = 121124732639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121133121547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60566560623 + 60566560624.

It is an arithmetic number, because the mean of its divisors is an integer number (60566560624).

Almost surely, 2^121133121247 is an apocalyptic number.

121133121247 is a deficient number, since it is larger than the sum of its proper divisors (1).

121133121247 is an equidigital number, since it uses as much as digits as its factorization.

121133121247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

Adding to 121133121247 its reverse (742121331121), we get a palindrome (863254452368).

The spelling of 121133121247 in words is "one hundred twenty-one billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred forty-seven".