6222120636 has 48 divisors (see below), whose sum is σ = 15072220800. Its totient is φ = 1995413952.

The previous prime is 6222120629. The next prime is 6222120637. The reversal of 6222120636 is 6360212226.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6222120637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66895 + ... + 130073.

It is an arithmetic number, because the mean of its divisors is an integer number (314004600).

Almost surely, 2^6222120636 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 6222120636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7536110400).

6222120636 is an abundant number, since it is smaller than the sum of its proper divisors (8850100164).

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

6222120636 is a wasteful number, since it uses less digits than its factorization.

6222120636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63498 (or 63496 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 6222120636 is about 78880.4198518238. The cubic root of 6222120636 is about 1839.2727746037.

The spelling of 6222120636 in words is "six billion, two hundred twenty-two million, one hundred twenty thousand, six hundred thirty-six".