121102312403 has 4 divisors (see below), whose sum is σ = 125278254240. Its totient is φ = 116926370568.

The previous prime is 121102312399. The next prime is 121102312439. The reversal of 121102312403 is 304213201121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121102312403 - 2² = 121102312399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121102312103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087970875 + ... + 2087970932.

It is an arithmetic number, because the mean of its divisors is an integer number (31319563560).

Almost surely, 2^121102312403 is an apocalyptic number.

121102312403 is a deficient number, since it is larger than the sum of its proper divisors (4175941837).

121102312403 is an equidigital number, since it uses as much as digits as its factorization.

121102312403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175941836.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121102312403 its reverse (304213201121), we get a palindrome (425315513524).

The spelling of 121102312403 in words is "one hundred twenty-one billion, one hundred two million, three hundred twelve thousand, four hundred three".