2003211121 has 2 divisors, whose sum is σ = 2003211122. Its totient is φ = 2003211120.

The previous prime is 2003211113. The next prime is 2003211131. The reversal of 2003211121 is 1211123002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060414096 + 942797025 = 32564^2 + 30705^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003211121 - 2³ = 2003211113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2003211101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001605560 + 1001605561.

It is an arithmetic number, because the mean of its divisors is an integer number (1001605561).

Almost surely, 2^2003211121 is an apocalyptic number.

It is an amenable number.

2003211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003211121 is an equidigital number, since it uses as much as digits as its factorization.

2003211121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2003211121 is about 44757.2465752754. The cubic root of 2003211121 is about 1260.5949825005.

Adding to 2003211121 its reverse (1211123002), we get a palindrome (3214334123).

The spelling of 2003211121 in words is "two billion, three million, two hundred eleven thousand, one hundred twenty-one".