6115221 has 24 divisors (see below), whose sum is σ = 10196160. Its totient is φ = 3459456.

The previous prime is 6115199. The next prime is 6115229. The reversal of 6115221 is 1225116.

6115221 is a `hidden beast` number, since 611 + 52 + 2 + 1 = 666.

It is not a de Polignac number, because 6115221 - 2¹⁴ = 6098837 is a prime.

6115221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6115194 and 6115203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6115229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6690 + ... + 7548.

It is an arithmetic number, because the mean of its divisors is an integer number (424840).

Almost surely, 2^6115221 is an apocalyptic number.

It is an amenable number.

6115221 is a deficient number, since it is larger than the sum of its proper divisors (4080939).

6115221 is a wasteful number, since it uses less digits than its factorization.

6115221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985 (or 982 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 6115221 is about 2472.8972886070. The cubic root of 6115221 is about 182.8678612521.

It can be divided in two parts, 6115 and 221, that added together give a palindrome (6336).

The spelling of 6115221 in words is "six million, one hundred fifteen thousand, two hundred twenty-one".