2186868720222 has 112 divisors (see below), whose sum is σ = 5057896218432. Its totient is φ = 708304564800.

The previous prime is 2186868720217. The next prime is 2186868720227. The reversal of 2186868720222 is 2220278686812.

It is an interprime number because it is at equal distance from previous prime (2186868720217) and next prime (2186868720227).

It is a super-2 number, since 2×2186868720222² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2186868720227) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 40810347 + ... + 40863897.

Almost surely, 2^{2186868720222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2186868720222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528948109216).

2186868720222 is an abundant number, since it is smaller than the sum of its proper divisors (2871027498210).

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

2186868720222 is an equidigital number, since it uses as much as digits as its factorization.

2186868720222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54365 (or 54350 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 2186868720222 in words is "two trillion, one hundred eighty-six billion, eight hundred sixty-eight million, seven hundred twenty thousand, two hundred twenty-two".