4211041221 has 6 divisors (see below), whose sum is σ = 6082615110. Its totient is φ = 2807360808.

The previous prime is 4211041217. The next prime is 4211041223. The reversal of 4211041221 is 1221401124.

It can be written as a sum of positive squares in only one way, i.e., 3658556196 + 552485025 = 60486^2 + 23505^2 .

It is not a de Polignac number, because 4211041221 - 2² = 4211041217 is a prime.

It is a super-2 number, since 2×4211041221² = 35465736329922341682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4211041194 and 4211041203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4211041223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 233946726 + ... + 233946743.

It is an arithmetic number, because the mean of its divisors is an integer number (1013769185).

Almost surely, 2^4211041221 is an apocalyptic number.

It is an amenable number.

4211041221 is a deficient number, since it is larger than the sum of its proper divisors (1871573889).

4211041221 is a wasteful number, since it uses less digits than its factorization.

4211041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467893475 (or 467893472 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 4211041221 is about 64892.5359421251. The cubic root of 4211041221 is about 1614.8412360745.

Adding to 4211041221 its reverse (1221401124), we get a palindrome (5432442345).

The spelling of 4211041221 in words is "four billion, two hundred eleven million, forty-one thousand, two hundred twenty-one".