121243134043 has 2 divisors, whose sum is σ = 121243134044. Its totient is φ = 121243134042.

The previous prime is 121243133993. The next prime is 121243134091. The reversal of 121243134043 is 340431342121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121243134043 is a prime.

It is not a weakly prime, because it can be changed into another prime (121243138043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60621567021 + 60621567022.

It is an arithmetic number, because the mean of its divisors is an integer number (60621567022).

Almost surely, 2^121243134043 is an apocalyptic number.

121243134043 is a deficient number, since it is larger than the sum of its proper divisors (1).

121243134043 is an equidigital number, since it uses as much as digits as its factorization.

121243134043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 121243134043 its reverse (340431342121), we get a palindrome (461674476164).

The spelling of 121243134043 in words is "one hundred twenty-one billion, two hundred forty-three million, one hundred thirty-four thousand, forty-three".