121121121106903 has 2 divisors, whose sum is σ = 121121121106904. Its totient is φ = 121121121106902.

The previous prime is 121121121106901. The next prime is 121121121106949. The reversal of 121121121106903 is 309601121121121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121121121106903 - 2¹ = 121121121106901 is a prime.

Together with 121121121106901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121121106901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560560553451 + 60560560553452.

It is an arithmetic number, because the mean of its divisors is an integer number (60560560553452).

Almost surely, 2^{121121121106903} is an apocalyptic number.

121121121106903 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121121106903 is an equidigital number, since it uses as much as digits as its factorization.

121121121106903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 121121121106903 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred six thousand, nine hundred three".