12121122121003 has 4 divisors (see below), whose sum is σ = 13852710995440. Its totient is φ = 10389533246568.

The previous prime is 12121122120959. The next prime is 12121122121039. The reversal of 12121122121003 is 30012122112121.

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

It is not a de Polignac number, because 12121122121003 - 2³³ = 12112532186411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121122121103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865794437208 + ... + 865794437221.

It is an arithmetic number, because the mean of its divisors is an integer number (3463177748860).

Almost surely, 2^{12121122121003} is an apocalyptic number.

12121122121003 is a deficient number, since it is larger than the sum of its proper divisors (1731588874437).

12121122121003 is an equidigital number, since it uses as much as digits as its factorization.

12121122121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731588874436.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12121122121003 its reverse (30012122112121), we get a palindrome (42133244233124).

The spelling of 12121122121003 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, three".