121331110211303 has 4 divisors (see below), whose sum is σ = 126606375872688. Its totient is φ = 116055844549920.

The previous prime is 121331110211291. The next prime is 121331110211327. The reversal of 121331110211303 is 303112011133121.

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 121331110211303 - 2³⁴ = 121313930342119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 5275265661361 = 121331110211303 / (1 + 2 + 1 + 3 + 3 + 1 + 1 + 1 + 0 + 2 + 1 + 1 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331110211383) 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 in 3 ways as a sum of consecutive naturals, for example, 2637632830658 + ... + 2637632830703.

It is an arithmetic number, because the mean of its divisors is an integer number (31651593968172).

Almost surely, 2^{121331110211303} is an apocalyptic number.

121331110211303 is a deficient number, since it is larger than the sum of its proper divisors (5275265661385).

121331110211303 is an equidigital number, since it uses as much as digits as its factorization.

121331110211303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5275265661384.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 121331110211303 its reverse (303112011133121), we get a palindrome (424443121344424).

The spelling of 121331110211303 in words is "one hundred twenty-one trillion, three hundred thirty-one billion, one hundred ten million, two hundred eleven thousand, three hundred three".