2003101221 has 16 divisors (see below), whose sum is σ = 2932904448. Its totient is φ = 1205958000.

The previous prime is 2003101193. The next prime is 2003101229. The reversal of 2003101221 is 1221013002.

It is not a de Polignac number, because 2003101221 - 2⁵ = 2003101189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2003101197 and 2003101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003101229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196011 + ... + 205976.

It is an arithmetic number, because the mean of its divisors is an integer number (183306528).

Almost surely, 2^2003101221 is an apocalyptic number.

It is an amenable number.

2003101221 is a deficient number, since it is larger than the sum of its proper divisors (929803227).

2003101221 is a wasteful number, since it uses less digits than its factorization.

2003101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402152.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2003101221 is about 44756.0188242878. The cubic root of 2003101221 is about 1260.5719291937.

Adding to 2003101221 its reverse (1221013002), we get a palindrome (3224114223).

The spelling of 2003101221 in words is "two billion, three million, one hundred one thousand, two hundred twenty-one".