121233133247 has 2 divisors, whose sum is σ = 121233133248. Its totient is φ = 121233133246.

The previous prime is 121233133211. The next prime is 121233133267. The reversal of 121233133247 is 742331332121.

It is a strong prime.

It is an emirp because it is prime and its reverse (742331332121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121233133247 - 2²⁰ = 121232084671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121233133267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616566623 + 60616566624.

It is an arithmetic number, because the mean of its divisors is an integer number (60616566624).

Almost surely, 2^121233133247 is an apocalyptic number.

121233133247 is a deficient number, since it is larger than the sum of its proper divisors (1).

121233133247 is an equidigital number, since it uses as much as digits as its factorization.

121233133247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 32.

Adding to 121233133247 its reverse (742331332121), we get a palindrome (863564465368).

The spelling of 121233133247 in words is "one hundred twenty-one billion, two hundred thirty-three million, one hundred thirty-three thousand, two hundred forty-seven".