6721122 has 8 divisors (see below), whose sum is σ = 13442256. Its totient is φ = 2240372.

The previous prime is 6721109. The next prime is 6721123. The reversal of 6721122 is 2211276.

It is a sphenic number, since it is the product of 3 distinct primes.

6721122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (6721123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560088 + ... + 560099.

It is an arithmetic number, because the mean of its divisors is an integer number (1680282).

Almost surely, 2^6721122 is an apocalyptic number.

6721122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6721122 is a wasteful number, since it uses less digits than its factorization.

6721122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120192.

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

The square root of 6721122 is about 2592.5126807790. The cubic root of 6721122 is about 188.7182611136.

Adding to 6721122 its reverse (2211276), we get a palindrome (8932398).

The spelling of 6721122 in words is "six million, seven hundred twenty-one thousand, one hundred twenty-two".