121243001303 has 2 divisors, whose sum is σ = 121243001304. Its totient is φ = 121243001302.

The previous prime is 121243001291. The next prime is 121243001309. The reversal of 121243001303 is 303100342121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121243001303 - 2²² = 121238806999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121243001309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60621500651 + 60621500652.

It is an arithmetic number, because the mean of its divisors is an integer number (60621500652).

Almost surely, 2^121243001303 is an apocalyptic number.

121243001303 is a deficient number, since it is larger than the sum of its proper divisors (1).

121243001303 is an equidigital number, since it uses as much as digits as its factorization.

121243001303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121243001303 its reverse (303100342121), we get a palindrome (424343343424).

The spelling of 121243001303 in words is "one hundred twenty-one billion, two hundred forty-three million, one thousand, three hundred three".