222238297440 has 144 divisors (see below), whose sum is σ = 758521619856. Its totient is φ = 59253120000.

The previous prime is 222238297381. The next prime is 222238297451. The reversal of 222238297440 is 44792832222.

222238297440 is a `hidden beast` number, since 2 + 22 + 23 + 82 + 97 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11655915 + ... + 11674965.

It is an arithmetic number, because the mean of its divisors is an integer number (5267511249).

Almost surely, 2^222238297440 is an apocalyptic number.

222238297440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222238297440 is an abundant number, since it is smaller than the sum of its proper divisors (536283322416).

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

222238297440 is a wasteful number, since it uses less digits than its factorization.

222238297440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27173 (or 27162 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 222238297440 in words is "two hundred twenty-two billion, two hundred thirty-eight million, two hundred ninety-seven thousand, four hundred forty".