2203223121 has 24 divisors (see below), whose sum is σ = 3552490656. Its totient is φ = 1304231040.

The previous prime is 2203223117. The next prime is 2203223123. The reversal of 2203223121 is 1213223022.

2203223121 is a `hidden beast` number, since 220 + 322 + 3 + 121 = 666.

It is not a de Polignac number, because 2203223121 - 2² = 2203223117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2203223094 and 2203223103.

It is not an unprimeable number, because it can be changed into a prime (2203223123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254520 + ... + 263033.

It is an arithmetic number, because the mean of its divisors is an integer number (148020444).

Almost surely, 2^2203223121 is an apocalyptic number.

It is an amenable number.

2203223121 is a deficient number, since it is larger than the sum of its proper divisors (1349267535).

2203223121 is a wasteful number, since it uses less digits than its factorization.

2203223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517613 (or 517610 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2203223121 is about 46938.5036084450. The cubic root of 2203223121 is about 1301.2262829297.

Adding to 2203223121 its reverse (1213223022), we get a palindrome (3416446143).

Subtracting from 2203223121 its reverse (1213223022), we obtain a palindrome (990000099).

The spelling of 2203223121 in words is "two billion, two hundred three million, two hundred twenty-three thousand, one hundred twenty-one".