2218388722220 has 48 divisors (see below), whose sum is σ = 5139229485600. Its totient is φ = 797622904320.

The previous prime is 2218388722201. The next prime is 2218388722229. The reversal of 2218388722220 is 222278838122.

It is not an unprimeable number, because it can be changed into a prime (2218388722229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56629775 + ... + 56668934.

It is an arithmetic number, because the mean of its divisors is an integer number (107067280950).

Almost surely, 2^{2218388722220} is an apocalyptic number.

2218388722220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218388722220 is an abundant number, since it is smaller than the sum of its proper divisors (2920840763380).

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

2218388722220 is a wasteful number, since it uses less digits than its factorization.

2218388722220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113298818 (or 113298816 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 47.

The spelling of 2218388722220 in words is "two trillion, two hundred eighteen billion, three hundred eighty-eight million, seven hundred twenty-two thousand, two hundred twenty".