20121013303 has 4 divisors (see below), whose sum is σ = 20121969688. Its totient is φ = 20120056920.

The previous prime is 20121013279. The next prime is 20121013313. The reversal of 20121013303 is 30331012102.

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 20121013303 - 2²¹ = 20118916151 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 (20121013313) 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 in 3 ways as a sum of consecutive naturals, for example, 445908 + ... + 488953.

It is an arithmetic number, because the mean of its divisors is an integer number (5030492422).

Almost surely, 2^20121013303 is an apocalyptic number.

20121013303 is a deficient number, since it is larger than the sum of its proper divisors (956385).

20121013303 is an equidigital number, since it uses as much as digits as its factorization.

20121013303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956384.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20121013303 its reverse (30331012102), we get a palindrome (50452025405).

The spelling of 20121013303 in words is "twenty billion, one hundred twenty-one million, thirteen thousand, three hundred three".