2003223313121 has 4 divisors (see below), whose sum is σ = 2003237174532. Its totient is φ = 2003209451712.

The previous prime is 2003223313067. The next prime is 2003223313139. The reversal of 2003223313121 is 1213133223002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 490089604096 + 1513133709025 = 700064^2 + 1230095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003223313121 - 2¹⁸ = 2003223050977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003223313171) 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 3 ways as a sum of consecutive naturals, for example, 6711620 + ... + 7003733.

It is an arithmetic number, because the mean of its divisors is an integer number (500809293633).

Almost surely, 2^{2003223313121} is an apocalyptic number.

It is an amenable number.

2003223313121 is a deficient number, since it is larger than the sum of its proper divisors (13861411).

2003223313121 is a wasteful number, since it uses less digits than its factorization.

2003223313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13861410.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2003223313121 its reverse (1213133223002), we get a palindrome (3216356536123).

The spelling of 2003223313121 in words is "two trillion, three billion, two hundred twenty-three million, three hundred thirteen thousand, one hundred twenty-one".