4210042221 has 36 divisors (see below), whose sum is σ = 7717117824. Its totient is φ = 2187032400.

The previous prime is 4210042219. The next prime is 4210042229. The reversal of 4210042221 is 1222400124.

It is not a de Polignac number, because 4210042221 - 2¹ = 4210042219 is a prime.

It is a super-2 number, since 2×4210042221² = 35448911005205225682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4210042194 and 4210042203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4210042229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 429085 + ... + 438786.

It is an arithmetic number, because the mean of its divisors is an integer number (214364384).

Almost surely, 2^4210042221 is an apocalyptic number.

It is an amenable number.

4210042221 is a deficient number, since it is larger than the sum of its proper divisors (3507075603).

4210042221 is a wasteful number, since it uses less digits than its factorization.

4210042221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867902 (or 867892 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4210042221 is about 64884.8381442075. The cubic root of 4210042221 is about 1614.7135278350.

Adding to 4210042221 its reverse (1222400124), we get a palindrome (5432442345).

The spelling of 4210042221 in words is "four billion, two hundred ten million, forty-two thousand, two hundred twenty-one".