121001230243 has 2 divisors, whose sum is σ = 121001230244. Its totient is φ = 121001230242.

The previous prime is 121001230169. The next prime is 121001230249. The reversal of 121001230243 is 342032100121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121001230243 - 2²¹ = 120999133091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121001230243.

It is not a weakly prime, because it can be changed into another prime (121001230249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500615121 + 60500615122.

It is an arithmetic number, because the mean of its divisors is an integer number (60500615122).

Almost surely, 2^121001230243 is an apocalyptic number.

121001230243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001230243 is an equidigital number, since it uses as much as digits as its factorization.

121001230243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121001230243 its reverse (342032100121), we get a palindrome (463033330364).

The spelling of 121001230243 in words is "one hundred twenty-one billion, one million, two hundred thirty thousand, two hundred forty-three".