6722227512 has 384 divisors, whose sum is σ = 25736256000. Its totient is φ = 1526584320.

The previous prime is 6722227489. The next prime is 6722227517. The reversal of 6722227512 is 2157222276.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6722227517) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1366914 + ... + 1371822.

It is an arithmetic number, because the mean of its divisors is an integer number (67021500).

Almost surely, 2^6722227512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6722227512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12868128000).

6722227512 is an abundant number, since it is smaller than the sum of its proper divisors (19014028488).

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

6722227512 is a wasteful number, since it uses less digits than its factorization.

6722227512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971 (or 4964 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 6722227512 is about 81989.1914339933. The cubic root of 6722227512 is about 1887.2860754409.

Adding to 6722227512 its reverse (2157222276), we get a palindrome (8879449788).

The spelling of 6722227512 in words is "six billion, seven hundred twenty-two million, two hundred twenty-seven thousand, five hundred twelve".