222666622440 has 32 divisors (see below), whose sum is σ = 667999867680. Its totient is φ = 59377765952.

The previous prime is 222666622427. The next prime is 222666622441. The reversal of 222666622440 is 44226666222.

It is a junction number, because it is equal to n+sod(n) for n = 222666622392 and 222666622401.

It is not an unprimeable number, because it can be changed into a prime (222666622441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927777474 + ... + 927777713.

It is an arithmetic number, because the mean of its divisors is an integer number (20874995865).

Almost surely, 2^222666622440 is an apocalyptic number.

222666622440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222666622440 is an abundant number, since it is smaller than the sum of its proper divisors (445333245240).

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

222666622440 is a wasteful number, since it uses less digits than its factorization.

222666622440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855555201 (or 1855555197 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 222666622440 in words is "two hundred twenty-two billion, six hundred sixty-six million, six hundred twenty-two thousand, four hundred forty".