121100213303 has 16 divisors (see below), whose sum is σ = 135032728320. Its totient is φ = 107929616256.

The previous prime is 121100213281. The next prime is 121100213323. The reversal of 121100213303 is 303312001121.

It is a cyclic number.

It is not a de Polignac number, because 121100213303 - 2²⁰ = 121099164727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100213323) 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 15 ways as a sum of consecutive naturals, for example, 649550 + ... + 814932.

It is an arithmetic number, because the mean of its divisors is an integer number (8439545520).

Almost surely, 2^121100213303 is an apocalyptic number.

121100213303 is a deficient number, since it is larger than the sum of its proper divisors (13932515017).

121100213303 is a wasteful number, since it uses less digits than its factorization.

121100213303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167686.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 121100213303 its reverse (303312001121), we get a palindrome (424412214424).

The spelling of 121100213303 in words is "one hundred twenty-one billion, one hundred million, two hundred thirteen thousand, three hundred three".