6721122206 has 16 divisors (see below), whose sum is σ = 10616942160. Its totient is φ = 3182296320.

The previous prime is 6721122179. The next prime is 6721122211. The reversal of 6721122206 is 6022211276.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52046 + ... + 127086.

It is an arithmetic number, because the mean of its divisors is an integer number (663558885).

Almost surely, 2^6721122206 is an apocalyptic number.

6721122206 is a deficient number, since it is larger than the sum of its proper divisors (3895819954).

6721122206 is a wasteful number, since it uses less digits than its factorization.

6721122206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77419.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 6721122206 is about 81982.4505976736. The cubic root of 6721122206 is about 1887.1826304166.

The spelling of 6721122206 in words is "six billion, seven hundred twenty-one million, one hundred twenty-two thousand, two hundred six".