2204213121 has 32 divisors (see below), whose sum is σ = 3685219200. Its totient is φ = 1289816640.

The previous prime is 2204213117. The next prime is 2204213129. The reversal of 2204213121 is 1213124022.

It is a happy number.

2204213121 is a `hidden beast` number, since 220 + 421 + 3 + 1 + 21 = 666.

It is not a de Polignac number, because 2204213121 - 2² = 2204213117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2204213094 and 2204213103.

It is not an unprimeable number, because it can be changed into a prime (2204213129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119346 + ... + 136571.

It is an arithmetic number, because the mean of its divisors is an integer number (115163100).

Almost surely, 2^2204213121 is an apocalyptic number.

It is an amenable number.

2204213121 is a deficient number, since it is larger than the sum of its proper divisors (1481006079).

2204213121 is a wasteful number, since it uses less digits than its factorization.

2204213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255966 (or 255960 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2204213121 is about 46949.0481373158. The cubic root of 2204213121 is about 1301.4211521506.

Adding to 2204213121 its reverse (1213124022), we get a palindrome (3417337143).

The spelling of 2204213121 in words is "two billion, two hundred four million, two hundred thirteen thousand, one hundred twenty-one".