226122640240 has 80 divisors (see below), whose sum is σ = 613102276800. Its totient is φ = 77527752960.

The previous prime is 226122640213. The next prime is 226122640241. The reversal of 226122640240 is 42046221622.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×226122640240² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226122640241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4092871 + ... + 4147750.

It is an arithmetic number, because the mean of its divisors is an integer number (7663778460).

Almost surely, 2^226122640240 is an apocalyptic number.

226122640240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226122640240 is an abundant number, since it is smaller than the sum of its proper divisors (386979636560).

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

226122640240 is an equidigital number, since it uses as much as digits as its factorization.

226122640240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8240655 (or 8240635 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 226122640240 its reverse (42046221622), we get a palindrome (268168861862).

The spelling of 226122640240 in words is "two hundred twenty-six billion, one hundred twenty-two million, six hundred forty thousand, two hundred forty".