622222220 has 24 divisors (see below), whose sum is σ = 1363479264. Its totient is φ = 238067456.

The previous prime is 622222207. The next prime is 622222247. The reversal of 622222220 is 22222226.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 622222192 and 622222201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675869 + ... + 676788.

It is an arithmetic number, because the mean of its divisors is an integer number (56811636).

Almost surely, 2^622222220 is an apocalyptic number.

It is an amenable number.

622222220 is an abundant number, since it is smaller than the sum of its proper divisors (741257044).

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

622222220 is a wasteful number, since it uses less digits than its factorization.

622222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352689 (or 1352687 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 622222220 is about 24944.3825339494. The cubic root of 622222220 is about 853.7194423087.

Adding to 622222220 its reverse (22222226), we get a palindrome (644444446).

The spelling of 622222220 in words is "six hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".