122218973440 has 72 divisors (see below), whose sum is σ = 302847645240. Its totient is φ = 47201796096.

The previous prime is 122218973423. The next prime is 122218973491. The reversal of 122218973440 is 44379812221.

122218973440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22827583744 + 99391389696 = 151088^2 + 315264^2 .

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, 1609149 + ... + 1683388.

It is an arithmetic number, because the mean of its divisors is an integer number (4206217295).

Almost surely, 2^122218973440 is an apocalyptic number.

122218973440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122218973440 is an abundant number, since it is smaller than the sum of its proper divisors (180628671800).

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

122218973440 is an equidigital number, since it uses as much as digits as its factorization.

122218973440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292587 (or 3292573 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 122218973440 in words is "one hundred twenty-two billion, two hundred eighteen million, nine hundred seventy-three thousand, four hundred forty".