6122721 has 24 divisors (see below), whose sum is σ = 9116352. Its totient is φ = 3652000.

The previous prime is 6122713. The next prime is 6122747. The reversal of 6122721 is 1272216.

6122721 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 6122721 - 2³ = 6122713 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6122791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36580 + ... + 36746.

It is an arithmetic number, because the mean of its divisors is an integer number (379848).

Almost surely, 2^6122721 is an apocalyptic number.

It is an amenable number.

6122721 is a deficient number, since it is larger than the sum of its proper divisors (2993631).

6122721 is a wasteful number, since it uses less digits than its factorization.

6122721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 282 counting only the distinct ones).

The product of its digits is 336, while the sum is 21.

The square root of 6122721 is about 2474.4132637860. The cubic root of 6122721 is about 182.9425900120.

Adding to 6122721 its reverse (1272216), we get a palindrome (7394937).

It can be divided in two parts, 612 and 2721, that added together give a palindrome (3333).

The spelling of 6122721 in words is "six million, one hundred twenty-two thousand, seven hundred twenty-one".