2003222121121 has 4 divisors (see below), whose sum is σ = 2157316130452. Its totient is φ = 1849128111792.

The previous prime is 2003222121119. The next prime is 2003222121167. The reversal of 2003222121121 is 1211212223002.

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 260544910096 + 1742677211025 = 510436^2 + 1320105^2 .

It is not a de Polignac number, because 2003222121121 - 2¹ = 2003222121119 is a prime.

It is a super-3 number, since 3×2003222121121³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003222121191) 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, 77047004646 + ... + 77047004671.

It is an arithmetic number, because the mean of its divisors is an integer number (539329032613).

Almost surely, 2^{2003222121121} is an apocalyptic number.

It is an amenable number.

2003222121121 is a deficient number, since it is larger than the sum of its proper divisors (154094009331).

2003222121121 is a wasteful number, since it uses less digits than its factorization.

2003222121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154094009330.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2003222121121 its reverse (1211212223002), we get a palindrome (3214434344123).

The spelling of 2003222121121 in words is "two trillion, three billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".