222444142540 has 24 divisors (see below), whose sum is σ = 471498430032. Its totient is φ = 88146089280.

The previous prime is 222444142489. The next prime is 222444142549. The reversal of 222444142540 is 45241444222.

It is a junction number, because it is equal to n+sod(n) for n = 222444142496 and 222444142505.

It is not an unprimeable number, because it can be changed into a prime (222444142549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51970791 + ... + 51975070.

It is an arithmetic number, because the mean of its divisors is an integer number (19645767918).

Almost surely, 2^222444142540 is an apocalyptic number.

222444142540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222444142540 is an abundant number, since it is smaller than the sum of its proper divisors (249054287492).

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

222444142540 is a wasteful number, since it uses less digits than its factorization.

222444142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103945977 (or 103945975 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 222444142540 its reverse (45241444222), we get a palindrome (267685586762).

The spelling of 222444142540 in words is "two hundred twenty-two billion, four hundred forty-four million, one hundred forty-two thousand, five hundred forty".