121320012011303 has 16 divisors (see below), whose sum is σ = 140926127632704. Its totient is φ = 102282609116160.

The previous prime is 121320012011293. The next prime is 121320012011309. The reversal of 121320012011303 is 303110210023121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121320012011303 - 2⁴ = 121320012011287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320012011309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34372151 + ... + 37737047.

It is an arithmetic number, because the mean of its divisors is an integer number (8807882977044).

Almost surely, 2^{121320012011303} is an apocalyptic number.

121320012011303 is a deficient number, since it is larger than the sum of its proper divisors (19606115621401).

121320012011303 is an equidigital number, since it uses as much as digits as its factorization.

121320012011303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449402.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121320012011303 its reverse (303110210023121), we get a palindrome (424430222034424).

The spelling of 121320012011303 in words is "one hundred twenty-one trillion, three hundred twenty billion, twelve million, eleven thousand, three hundred three".