121113221903 has 2 divisors, whose sum is σ = 121113221904. Its totient is φ = 121113221902.

The previous prime is 121113221899. The next prime is 121113221909. The reversal of 121113221903 is 309122311121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121113221903 - 2² = 121113221899 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121113221909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556610951 + 60556610952.

It is an arithmetic number, because the mean of its divisors is an integer number (60556610952).

Almost surely, 2^121113221903 is an apocalyptic number.

121113221903 is a deficient number, since it is larger than the sum of its proper divisors (1).

121113221903 is an equidigital number, since it uses as much as digits as its factorization.

121113221903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 121113221903 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred twenty-one thousand, nine hundred three".