6721111422 has 24 divisors (see below), whose sum is σ = 14568527376. Its totient is φ = 2239429056.

The previous prime is 6721111409. The next prime is 6721111447. The reversal of 6721111422 is 2241111276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33738 + ... + 120749.

It is an arithmetic number, because the mean of its divisors is an integer number (607021974).

Almost surely, 2^6721111422 is an apocalyptic number.

6721111422 is an abundant number, since it is smaller than the sum of its proper divisors (7847415954).

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

6721111422 is a wasteful number, since it uses less digits than its factorization.

6721111422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156912 (or 156909 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 6721111422 is about 81982.3848274738. The cubic root of 6721111422 is about 1887.1816210917.

Adding to 6721111422 its reverse (2241111276), we get a palindrome (8962222698).

The spelling of 6721111422 in words is "six billion, seven hundred twenty-one million, one hundred eleven thousand, four hundred twenty-two".